NH4+
- Formula: H4N+
- Molecular weight: 18.0379
- IUPAC Standard InChI: InChI=1S/H3N/h1H3/p+1
- IUPAC Standard InChIKey: QGZKDVFQNNGYKY-UHFFFAOYSA-O
- CAS Registry Number: 14798-03-9
- Chemical structure:
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- Information on this page:
- Other data available:
- Reaction thermochemistry data: reactions 51 to 93
- Vibrational and/or electronic energy levels
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Reaction thermochemistry data
Go To: Top, Ion clustering data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Michael M. Meot-Ner (Mautner) and Sharon G. Lias
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. A general reaction search form is also available. Future versions of this site may rely on reaction search pages in place of the enumerated reaction displays seen below.
Reactions 1 to 50
( • 3
) +
= (
• 4
)
By formula: (H4N+ • 3H3N) + H3N = (H4N+ • 4H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 12.2 ± 0.9 | kcal/mol | AVG | N/A | Average of 5 out of 10 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 28. ± 2. | cal/mol*K | AVG | N/A | Average of 3 out of 7 values; Individual data points |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 3.4 | 296. | FA | Fehsenfeld and Ferguson, 1973 | gas phase |
( • 2
) +
= (
• 3
)
By formula: (H4N+ • 2H3N) + H3N = (H4N+ • 3H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 13. ± 5. | kcal/mol | AVG | N/A | Average of 6 out of 9 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 25. ± 1. | cal/mol*K | AVG | N/A | Average of 4 out of 7 values; Individual data points |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 6.5 | 296. | FA | Fehsenfeld and Ferguson, 1973 | gas phase |
| 6.4 | 296. | SAMS | Puckett and Teague, 1971 | gas phase |
( •
) +
= (
• 2
)
By formula: (H4N+ • H3N) + H3N = (H4N+ • 2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 17. ± 1. | kcal/mol | AVG | N/A | Average of 5 out of 8 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 23.9 | cal/mol*K | HPMS | Tang and Castleman, 1975 | gas phase |
| ΔrS° | 23.7 | cal/mol*K | PHPMS | Arshadi and Futrell, 1974 | gas phase |
| ΔrS° | 24.8 | cal/mol*K | DT | Long and Franklin, 1973 | gas phase |
| ΔrS° | 26.8 | cal/mol*K | PHPMS | Searles and Kebarle, 1968 | gas phase |
| ΔrS° | 22.9 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase; typographical error in ΔrH |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 9.7 | 296. | FA | Fehsenfeld and Ferguson, 1973 | gas phase; DG> |
| 10.1 | 296. | SAMS | Puckett and Teague, 1971 | gas phase |
| 5.5 | 400. | HPMS | Wincel, 1972 | gas phase |
+
= (
•
)
By formula: H4N+ + H3N = (H4N+ • H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 26. ± 2. | kcal/mol | AVG | N/A | Average of 4 out of 9 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 26. ± 3. | cal/mol*K | AVG | N/A | Average of 4 out of 6 values; Individual data points |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 6.3 | 400. | HPMS | Wincel, 1972 | gas phase |
( •
) +
= (
• 2
)
By formula: (H4N+ • H2O) + H2O = (H4N+ • 2H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 17.4 | kcal/mol | PHPMS | Meot-Ner (Mautner) and Speller, 1986 | gas phase; ΔrH?, Entropy change is questionable, appear out of line |
| ΔrH° | 13.7 | kcal/mol | PHPMS | Meot-Ner (Mautner), 1984 | gas phase; Entropy change calculated or estimated; ΔrH of 12.4 kcal/mol from plot is too small |
| ΔrH° | 14.7 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 28.6 | cal/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1986 | gas phase; ΔrH?, Entropy change is questionable, appear out of line |
| ΔrS° | 22.0 | cal/mol*K | N/A | Meot-Ner (Mautner), 1984 | gas phase; Entropy change calculated or estimated; ΔrH of 12.4 kcal/mol from plot is too small |
| ΔrS° | 21.9 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 8.8 | kcal/mol | HPMS | Banic and Iribarne, 1985 | gas phase; electric fields |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 4.6 | 414. | PHPMS | Meot-Ner (Mautner), 1984 | gas phase; Entropy change calculated or estimated; ΔrH of 12.4 kcal/mol from plot is too small |
( • 4
) +
= (
• 5
)
By formula: (H4N+ • 4H3N) + H3N = (H4N+ • 5H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 7.0 | kcal/mol | PHPMS | Arshadi and Futrell, 1974 | gas phase |
| ΔrH° | 7.5 | kcal/mol | PHPMS | Searles and Kebarle, 1968 | gas phase |
| ΔrH° | 7. | kcal/mol | MKER | Wei, Tzeng, et al., 1990 | gas phase; from graph |
| ΔrH° | 2.8 | kcal/mol | TPEPICO | Kamke, Herrmann, et al., 1988 | gas phase |
| ΔrH° | 9.6 | kcal/mol | DT | Long and Franklin, 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 21.5 | cal/mol*K | PHPMS | Arshadi and Futrell, 1974 | gas phase |
| ΔrS° | 25. | cal/mol*K | PHPMS | Searles and Kebarle, 1968 | gas phase |
| ΔrS° | 32. | cal/mol*K | DT | Long and Franklin, 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 0.5 | kcal/mol | HPMS | Hogg, Haynes, et al., 1966 | gas phase |
( • 2
) +
= (
• 3
)
By formula: (H4N+ • 2H2O) + H2O = (H4N+ • 3H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 13.7 | kcal/mol | PHPMS | Meot-Ner (Mautner) and Speller, 1986 | gas phase |
| ΔrH° | 13.4 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| ΔrH° | 12.2 | kcal/mol | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 24.8 | cal/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1986 | gas phase |
| ΔrS° | 25.1 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| ΔrS° | 21.2 | cal/mol*K | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 6.5 | kcal/mol | HPMS | Banic and Iribarne, 1985 | gas phase; electric fields |
+
= (
•
)
By formula: H4N+ + H2O = (H4N+ • H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 20.6 | kcal/mol | PHPMS | Meot-Ner (Mautner) and Speller, 1986 | gas phase |
| ΔrH° | 19.9 | kcal/mol | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| ΔrH° | 17.3 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 24.6 | cal/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1986 | gas phase |
| ΔrS° | 23.1 | cal/mol*K | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| ΔrS° | 19.7 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( • 3
•
) +
= (
• 4
•
)
By formula: (H4N+ • 3CHN • H3N) + CHN = (H4N+ • 4CHN • H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 8.6 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated, T = 392 in paper is error |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 20. | cal/mol*K | N/A | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated, T = 392 in paper is error |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 2.7 | 292. | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated, T = 392 in paper is error |
( • 3
) +
= (
• 4
)
By formula: (H4N+ • 3H2O) + H2O = (H4N+ • 4H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 10.8 | kcal/mol | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| ΔrH° | 12.2 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 23.0 | cal/mol*K | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| ΔrS° | 27.3 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 5.0 | kcal/mol | HPMS | Banic and Iribarne, 1985 | gas phase; electric fields |
+
= (
•
)
By formula: H4N+ + C2N2 = (H4N+ • C2N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 10.4 | kcal/mol | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated, DG<, ΔrH< |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 23. | cal/mol*K | N/A | Speller and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated, DG<, ΔrH< |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 3.2 | 315. | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated, DG<, ΔrH< |
+
= (
•
)
By formula: H4N+ + C6H12 = (H4N+ • C6H12)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 9. | kcal/mol | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated, DG<, ΔrH< |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 20. | cal/mol*K | N/A | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated, DG<, ΔrH< |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 2.8 | 317. | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated, DG<, ΔrH< |
( •
• 2
) +
= (
• 2
• 2
)
By formula: (H4N+ • H3N • 2CHN) + H3N = (H4N+ • 2H3N • 2CHN)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 12.9 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 20. | cal/mol*K | N/A | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 6.6 | 315. | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
( •
• 2
) +
= (
• 2
• 2
)
By formula: (H4N+ • CHN • 2H3N) + CHN = (H4N+ • 2CHN • 2H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 11.2 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 20. | cal/mol*K | N/A | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 4.9 | 315. | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
( •
) +
= (
•
•
)
By formula: (H4N+ • CHN) + H3N = (H4N+ • H3N • CHN)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 18.8 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 22. | cal/mol*K | N/A | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 9.4 | 429. | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
( • 4
) +
= (
• 5
)
By formula: (H4N+ • 4C3H6O) + C3H6O = (H4N+ • 5C3H6O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 10.1 | kcal/mol | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 24.0 | cal/mol*K | N/A | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase; Entropy change calculated or estimated |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 4.5 | 215. | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase; Entropy change calculated or estimated |
+
= (
•
)
By formula: H4N+ + C4H8 = (H4N+ • C4H8)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 35.0 | kcal/mol | PHPMS | Meot-Ner (Mautner) and Sieck, 1991 | gas phase; condensation |
| ΔrH° | 34.9 | kcal/mol | PHPMS | Meot-Ner (Mautner) and Sieck, 1990 | gas phase; forms t-C4H9NH3+ |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 37.1 | cal/mol*K | PHPMS | Meot-Ner (Mautner) and Sieck, 1991 | gas phase; condensation |
| ΔrS° | 39.2 | cal/mol*K | PHPMS | Meot-Ner (Mautner) and Sieck, 1990 | gas phase; forms t-C4H9NH3+ |
+
= (
•
)
By formula: H4N+ + C6H4F2 = (H4N+ • C6H4F2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 13. | kcal/mol | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 20. | cal/mol*K | N/A | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 5.1 | 395. | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated |
+
= (
•
)
By formula: H4N+ + C2H4 = (H4N+ • C2H4)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 10. | kcal/mol | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 20. | cal/mol*K | N/A | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 3.7 | 294. | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated |
( • 4
) +
= (
• 5
)
By formula: (H4N+ • 4H2O) + H2O = (H4N+ • 5H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 10.6 | kcal/mol | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| ΔrH° | 9.7 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 27.0 | cal/mol*K | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| ΔrS° | 22.4 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( • 5
) +
= (
• 6
)
By formula: (H4N+ • 5H3N) + H3N = (H4N+ • 6H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 6.5 | kcal/mol | PHPMS | Arshadi and Futrell, 1974 | gas phase |
| ΔrH° | 6. | kcal/mol | MKER | Wei, Tzeng, et al., 1990 | gas phase; from graph |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 21.9 | cal/mol*K | PHPMS | Arshadi and Futrell, 1974 | gas phase |
( • 5
) +
= (
• 6
)
By formula: (H4N+ • 5H2O) + H2O = (H4N+ • 6H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 9.1 | kcal/mol | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 22. | cal/mol*K | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 3.2 | 266. | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
( • 6
) +
= (
• 7
)
By formula: (H4N+ • 6H2O) + H2O = (H4N+ • 7H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 8.4 | kcal/mol | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 22. | cal/mol*K | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 2.8 | 254. | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
+
= (
•
)
By formula: H4N+ + CHN = (H4N+ • CHN)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 21.9 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
| ΔrH° | 20.5 | kcal/mol | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 23.4 | cal/mol*K | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
| ΔrS° | 20.2 | cal/mol*K | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase |
( • 2
) +
= (
•
• 2
)
By formula: (H4N+ • 2H3N) + CHN = (H4N+ • CHN • 2H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 13.4 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 18.3 | cal/mol*K | N/A | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
( •
• 2
) +
= (
• 2
• 2
)
By formula: (H4N+ • H3N • 2H2O) + H3N = (H4N+ • 2H3N • 2H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 15.7 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 33.9 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( •
• 2
) +
= (
• 2
• 2
)
By formula: (H4N+ • H2O • 2H3N) + H2O = (H4N+ • 2H2O • 2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 11.7 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 27.8 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( • 2
•
) +
= (
• 3
•
)
By formula: (H4N+ • 2H3N • H2O) + H3N = (H4N+ • 3H3N • H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 15.0 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 34.3 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( • 2
•
) +
= (
• 3
•
)
By formula: (H4N+ • 2H2O • H3N) + H2O = (H4N+ • 3H2O • H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 12.2 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 28.5 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( •
•
) +
= (
• 2
•
)
By formula: (H4N+ • H3N • H2O) + H3N = (H4N+ • 2H3N • H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 17.1 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 31.8 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( •
•
) +
= (
• 2
•
)
By formula: (H4N+ • H2O • H3N) + H2O = (H4N+ • 2H2O • H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 12.7 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 25.0 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( • 2
) +
= (
•
• 2
)
By formula: (H4N+ • 2H3N) + H2O = (H4N+ • H2O • 2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 12.4 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 24.6 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( • 2
) +
= (
•
• 2
)
By formula: (H4N+ • 2H2O) + H3N = (H4N+ • H3N • 2H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 18.2 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 30.3 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( • 3
) +
= (
•
• 3
)
By formula: (H4N+ • 3H3N) + H2O = (H4N+ • H2O • 3H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 11.7 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 27.9 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( • 3
) +
= (
•
• 3
)
By formula: (H4N+ • 3H2O) + H3N = (H4N+ • H3N • 3H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 17.3 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 35.1 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( • 2
•
) +
= (
• 3
•
)
By formula: (H4N+ • 2H2O • O2S) + H2O = (H4N+ • 3H2O • O2S)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 5.2 | kcal/mol | HPMS | Banic and Iribarne, 1985 | gas phase; From thermochemical cycle,switching reaction, electric fields |
( •
) +
= (
•
•
)
By formula: (H4N+ • H3N) + H2O = (H4N+ • H2O • H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 12.9 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 20.3 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( •
•
) +
= (
• 2
•
)
By formula: (H4N+ • H2O • O2S) + H2O = (H4N+ • 2H2O • O2S)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 7.4 | kcal/mol | HPMS | Banic and Iribarne, 1985 | gas phase; From thermochemical cycle,switching reaction, electric fields |
( •
) +
= (
•
•
)
By formula: (H4N+ • H2O) + H3N = (H4N+ • H3N • H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 18.4 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 23.0 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( •
) +
= (
•
•
)
By formula: (H4N+ • C4H10O2) + H3N = (H4N+ • H3N • C4H10O2)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 14.0 | kcal/mol | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 19.4 | cal/mol*K | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
+
= (
•
)
By formula: H4N+ + C4H10O2 = (H4N+ • C4H10O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 38. ± 3. | kcal/mol | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase; possible ether decomposition |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 36. | cal/mol*K | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase; possible ether decomposition |
+
= (
•
)
By formula: H4N+ + CH4 = (H4N+ • CH4)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 3.6 | kcal/mol | HPMS | Bennet and Field, 1972 | gas phase; Entropy change is questionable |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 15.5 | cal/mol*K | HPMS | Bennet and Field, 1972 | gas phase; Entropy change is questionable |
+
= (
•
)
By formula: H4N+ + H2S = (H4N+ • H2S)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 11.4 | kcal/mol | PHPMS | Meot-Ner (Mautner) and Sieck, 1985 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 16.7 | cal/mol*K | PHPMS | Meot-Ner (Mautner) and Sieck, 1985 | gas phase |
( • 2
•
) +
= (
• 3
•
)
By formula: (H4N+ • 2CHN • H3N) + CHN = (H4N+ • 3CHN • H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 12.8 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 24.1 | cal/mol*K | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
( •
•
) +
= (
• 2
•
)
By formula: (H4N+ • CHN • H3N) + CHN = (H4N+ • 2CHN • H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 12.2 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 19.4 | cal/mol*K | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
( • 2
•
) +
= (
• 3
•
)
By formula: (H4N+ • 2H3N • C2H3N) + H3N = (H4N+ • 3H3N • C2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 13.6 | kcal/mol | MKER | Tzeng, Wei, et al., 1991 | gas phase; from graph |
( • 3
•
) +
= (
• 4
•
)
By formula: (H4N+ • 3H3N • C2H3N) + H3N = (H4N+ • 4H3N • C2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 7.4 | kcal/mol | MKER | Tzeng, Wei, et al., 1991 | gas phase; from graph |
( • 4
•
) +
= (
• 5
•
)
By formula: (H4N+ • 4H3N • C2H3N) + H3N = (H4N+ • 5H3N • C2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 6.9 | kcal/mol | MKER | Tzeng, Wei, et al., 1991 | gas phase; from graph |
( • 5
•
) +
= (
• 6
•
)
By formula: (H4N+ • 5H3N • C2H3N) + H3N = (H4N+ • 6H3N • C2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 6.0 | kcal/mol | MKER | Tzeng, Wei, et al., 1991 | gas phase; from graph |
( • 6
•
) +
= (
• 7
•
)
By formula: (H4N+ • 6H3N • C2H3N) + H3N = (H4N+ • 7H3N • C2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 5.5 | kcal/mol | MKER | Tzeng, Wei, et al., 1991 | gas phase; from graph |
Ion clustering data
Go To: Top, Reaction thermochemistry data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Data compiled by: Michael M. Meot-Ner (Mautner) and Sharon G. Lias
Note: Please consider using the reaction search for this species. This page allows searching of all reactions involving this species. Searches may be limited to ion clustering reactions. A general reaction search form is also available.
Clustering reactions
+
= (
•
)
By formula: H4N+ + CHN = (H4N+ • CHN)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 21.9 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
| ΔrH° | 20.5 | kcal/mol | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 23.4 | cal/mol*K | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
| ΔrS° | 20.2 | cal/mol*K | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase |
( •
) +
= (
• 2
)
By formula: (H4N+ • CHN) + CHN = (H4N+ • 2CHN)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 17.4 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 23.4 | cal/mol*K | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
( • 2
) +
= (
• 3
)
By formula: (H4N+ • 2CHN) + CHN = (H4N+ • 3CHN)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 13.7 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 21.5 | cal/mol*K | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
( • 3
) +
= (
• 4
)
By formula: (H4N+ • 3CHN) + CHN = (H4N+ • 4CHN)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 11.0 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 20.9 | cal/mol*K | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
( • 4
) +
= (
• 5
)
By formula: (H4N+ • 4CHN) + CHN = (H4N+ • 5CHN)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 7.9 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 18.9 | cal/mol*K | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
( • 5
) +
= (
• 6
)
By formula: (H4N+ • 5CHN) + CHN = (H4N+ • 6CHN)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 7.4 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 19.9 | cal/mol*K | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
( •
) +
= (
•
•
)
By formula: (H4N+ • CHN) + H3N = (H4N+ • H3N • CHN)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 18.8 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 22. | cal/mol*K | N/A | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 9.4 | 429. | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
( •
•
) +
= (
• 2
•
)
By formula: (H4N+ • CHN • H3N) + CHN = (H4N+ • 2CHN • H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 12.2 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 19.4 | cal/mol*K | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
( •
• 2
) +
= (
• 2
• 2
)
By formula: (H4N+ • CHN • 2H3N) + CHN = (H4N+ • 2CHN • 2H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 11.2 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 20. | cal/mol*K | N/A | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 4.9 | 315. | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
( • 2
•
) +
= (
• 3
•
)
By formula: (H4N+ • 2CHN • H3N) + CHN = (H4N+ • 3CHN • H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 12.8 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 24.1 | cal/mol*K | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
( • 3
•
) +
= (
• 4
•
)
By formula: (H4N+ • 3CHN • H3N) + CHN = (H4N+ • 4CHN • H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 8.6 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated, T = 392 in paper is error |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 20. | cal/mol*K | N/A | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated, T = 392 in paper is error |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 2.7 | 292. | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated, T = 392 in paper is error |
+
= (
•
)
By formula: H4N+ + CH4 = (H4N+ • CH4)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 3.6 | kcal/mol | HPMS | Bennet and Field, 1972 | gas phase; Entropy change is questionable |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 15.5 | cal/mol*K | HPMS | Bennet and Field, 1972 | gas phase; Entropy change is questionable |
+
= (
•
)
By formula: H4N+ + CO2 = (H4N+ • CO2)
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 2.3 | 296. | FA | Spears and Fehsenfeld, 1972 | gas phase |
+
= (
•
)
By formula: H4N+ + C2H3N = (H4N+ • C2H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 27.6 | kcal/mol | PHPMS | Liebman, Romm, et al., 1991 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 24.2 | cal/mol*K | PHPMS | Liebman, Romm, et al., 1991 | gas phase |
( •
) +
= (
• 2
)
By formula: (H4N+ • C2H3N) + C2H3N = (H4N+ • 2C2H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 21.2 | kcal/mol | PHPMS | Liebman, Romm, et al., 1991 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 25.4 | cal/mol*K | PHPMS | Liebman, Romm, et al., 1991 | gas phase |
( • 2
) +
= (
• 3
)
By formula: (H4N+ • 2C2H3N) + C2H3N = (H4N+ • 3C2H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 14.2 | kcal/mol | PHPMS | Liebman, Romm, et al., 1991 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 19.5 | cal/mol*K | PHPMS | Liebman, Romm, et al., 1991 | gas phase |
( • 3
) +
= (
• 4
)
By formula: (H4N+ • 3C2H3N) + C2H3N = (H4N+ • 4C2H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 11.7 | kcal/mol | PHPMS | Liebman, Romm, et al., 1991 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 22.2 | cal/mol*K | PHPMS | Liebman, Romm, et al., 1991 | gas phase |
+
= (
•
)
By formula: H4N+ + C2H4 = (H4N+ • C2H4)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 10. | kcal/mol | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 20. | cal/mol*K | N/A | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 3.7 | 294. | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated |
+
= (
•
)
By formula: H4N+ + C2N2 = (H4N+ • C2N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 10.4 | kcal/mol | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated, DG<, ΔrH< |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 23. | cal/mol*K | N/A | Speller and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated, DG<, ΔrH< |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 3.2 | 315. | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated, DG<, ΔrH< |
+
= (
•
)
By formula: H4N+ + C3HN = (H4N+ • C3HN)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 22.9 | kcal/mol | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 22.6 | cal/mol*K | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase |
+
= (
•
)
By formula: H4N+ + C3H6O = (H4N+ • C3H6O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 28.3 | kcal/mol | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 26.4 | cal/mol*K | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
( •
) +
= (
• 2
)
By formula: (H4N+ • C3H6O) + C3H6O = (H4N+ • 2C3H6O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 20.3 | kcal/mol | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 24.9 | cal/mol*K | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
( • 2
) +
= (
• 3
)
By formula: (H4N+ • 2C3H6O) + C3H6O = (H4N+ • 3C3H6O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 15.8 | kcal/mol | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 26.0 | cal/mol*K | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
( • 3
) +
= (
• 4
)
By formula: (H4N+ • 3C3H6O) + C3H6O = (H4N+ • 4C3H6O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 13.1 | kcal/mol | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 24.4 | cal/mol*K | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
( • 4
) +
= (
• 5
)
By formula: (H4N+ • 4C3H6O) + C3H6O = (H4N+ • 5C3H6O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 10.1 | kcal/mol | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 24.0 | cal/mol*K | N/A | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase; Entropy change calculated or estimated |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 4.5 | 215. | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase; Entropy change calculated or estimated |
+
= (
•
)
By formula: H4N+ + C3H8O2 = (H4N+ • C3H8O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 29.1 | kcal/mol | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 25.2 | cal/mol*K | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
+
= (
•
)
By formula: H4N+ + C4H7N = (H4N+ • C4H7N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 28.4 | kcal/mol | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 21.6 | cal/mol*K | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase |
+
= (
•
)
By formula: H4N+ + C4H8 = (H4N+ • C4H8)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 35.0 | kcal/mol | PHPMS | Meot-Ner (Mautner) and Sieck, 1991 | gas phase; condensation |
| ΔrH° | 34.9 | kcal/mol | PHPMS | Meot-Ner (Mautner) and Sieck, 1990 | gas phase; forms t-C4H9NH3+ |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 37.1 | cal/mol*K | PHPMS | Meot-Ner (Mautner) and Sieck, 1991 | gas phase; condensation |
| ΔrS° | 39.2 | cal/mol*K | PHPMS | Meot-Ner (Mautner) and Sieck, 1990 | gas phase; forms t-C4H9NH3+ |
+
= (
•
)
By formula: H4N+ + C4H10O2 = (H4N+ • C4H10O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 38. ± 3. | kcal/mol | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase; possible ether decomposition |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 36. | cal/mol*K | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase; possible ether decomposition |
( •
) +
= (
• 2
)
By formula: (H4N+ • C4H10O2) + C4H10O2 = (H4N+ • 2C4H10O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 23.2 | kcal/mol | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 33.5 | cal/mol*K | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
( • 2
) +
= (
• 3
)
By formula: (H4N+ • 2C4H10O2) + C4H10O2 = (H4N+ • 3C4H10O2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 14. ± 3. | kcal/mol | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 27.3 | cal/mol*K | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
( •
) +
= (
•
•
)
By formula: (H4N+ • C4H10O2) + H3N = (H4N+ • H3N • C4H10O2)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 14.0 | kcal/mol | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 19.4 | cal/mol*K | PHPMS | Meot-Ner (Mautner), Sieck, et al., 1996 | gas phase |
+
= (
•
)
By formula: H4N+ + C6H4F2 = (H4N+ • C6H4F2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 13. | kcal/mol | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 20. | cal/mol*K | N/A | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 5.1 | 395. | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated |
+
= (
•
)
By formula: H4N+ + C6H5F = (H4N+ • C6H5F)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 14.4 | kcal/mol | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 18.0 | cal/mol*K | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase |
+
= (
•
)
By formula: H4N+ + C6H6 = (H4N+ • C6H6)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 19.3 | kcal/mol | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 23.3 | cal/mol*K | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase |
( •
) +
= (
• 2
)
By formula: (H4N+ • C6H6) + C6H6 = (H4N+ • 2C6H6)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 17.0 | kcal/mol | PHPMS | Liebman, Romm, et al., 1991 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 30.5 | cal/mol*K | PHPMS | Liebman, Romm, et al., 1991 | gas phase |
( • 2
) +
= (
• 3
)
By formula: (H4N+ • 2C6H6) + C6H6 = (H4N+ • 3C6H6)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 14.2 | kcal/mol | PHPMS | Liebman, Romm, et al., 1991 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 32.9 | cal/mol*K | PHPMS | Liebman, Romm, et al., 1991 | gas phase |
+
= (
•
)
By formula: H4N+ + C6H12 = (H4N+ • C6H12)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 9. | kcal/mol | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated, DG<, ΔrH< |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 20. | cal/mol*K | N/A | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated, DG<, ΔrH< |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 2.8 | 317. | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated, DG<, ΔrH< |
+
= (
•
)
By formula: H4N+ + C9H12 = (H4N+ • C9H12)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 21.8 | kcal/mol | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 21.2 | cal/mol*K | PHPMS | Deakyne and Meot-Ner (Mautner), 1985 | gas phase |
+
= (
•
)
By formula: H4N+ + H2O = (H4N+ • H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 20.6 | kcal/mol | PHPMS | Meot-Ner (Mautner) and Speller, 1986 | gas phase |
| ΔrH° | 19.9 | kcal/mol | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| ΔrH° | 17.3 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 24.6 | cal/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1986 | gas phase |
| ΔrS° | 23.1 | cal/mol*K | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| ΔrS° | 19.7 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( • 2
) +
= (
•
• 2
)
By formula: (H4N+ • 2H2O) + CO2 = (H4N+ • CO2 • 2H2O)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 1.3 | kcal/mol | HPMS | Banic and Iribarne, 1985 | gas phase; electric fields |
( •
) +
= (
• 2
)
By formula: (H4N+ • H2O) + H2O = (H4N+ • 2H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 17.4 | kcal/mol | PHPMS | Meot-Ner (Mautner) and Speller, 1986 | gas phase; ΔrH?, Entropy change is questionable, appear out of line |
| ΔrH° | 13.7 | kcal/mol | PHPMS | Meot-Ner (Mautner), 1984 | gas phase; Entropy change calculated or estimated; ΔrH of 12.4 kcal/mol from plot is too small |
| ΔrH° | 14.7 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 28.6 | cal/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1986 | gas phase; ΔrH?, Entropy change is questionable, appear out of line |
| ΔrS° | 22.0 | cal/mol*K | N/A | Meot-Ner (Mautner), 1984 | gas phase; Entropy change calculated or estimated; ΔrH of 12.4 kcal/mol from plot is too small |
| ΔrS° | 21.9 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 8.8 | kcal/mol | HPMS | Banic and Iribarne, 1985 | gas phase; electric fields |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 4.6 | 414. | PHPMS | Meot-Ner (Mautner), 1984 | gas phase; Entropy change calculated or estimated; ΔrH of 12.4 kcal/mol from plot is too small |
( • 2
) +
= (
• 3
)
By formula: (H4N+ • 2H2O) + H2O = (H4N+ • 3H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 13.7 | kcal/mol | PHPMS | Meot-Ner (Mautner) and Speller, 1986 | gas phase |
| ΔrH° | 13.4 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| ΔrH° | 12.2 | kcal/mol | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 24.8 | cal/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1986 | gas phase |
| ΔrS° | 25.1 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| ΔrS° | 21.2 | cal/mol*K | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 6.5 | kcal/mol | HPMS | Banic and Iribarne, 1985 | gas phase; electric fields |
( • 3
) +
= (
• 4
)
By formula: (H4N+ • 3H2O) + H2O = (H4N+ • 4H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 10.8 | kcal/mol | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| ΔrH° | 12.2 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 23.0 | cal/mol*K | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| ΔrS° | 27.3 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 5.0 | kcal/mol | HPMS | Banic and Iribarne, 1985 | gas phase; electric fields |
( • 4
) +
= (
• 5
)
By formula: (H4N+ • 4H2O) + H2O = (H4N+ • 5H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 10.6 | kcal/mol | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| ΔrH° | 9.7 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 27.0 | cal/mol*K | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| ΔrS° | 22.4 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( • 5
) +
= (
• 6
)
By formula: (H4N+ • 5H2O) + H2O = (H4N+ • 6H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 9.1 | kcal/mol | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 22. | cal/mol*K | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 3.2 | 266. | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
( • 6
) +
= (
• 7
)
By formula: (H4N+ • 6H2O) + H2O = (H4N+ • 7H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 8.4 | kcal/mol | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 22. | cal/mol*K | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 2.8 | 254. | PHPMS | Meot-Ner (Mautner), 1984 | gas phase |
( •
) +
= (
•
•
)
By formula: (H4N+ • H2O) + H3N = (H4N+ • H3N • H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 18.4 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 23.0 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( • 2
) +
= (
•
• 2
)
By formula: (H4N+ • 2H2O) + H3N = (H4N+ • H3N • 2H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 18.2 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 30.3 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( • 3
) +
= (
•
• 3
)
By formula: (H4N+ • 3H2O) + H3N = (H4N+ • H3N • 3H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 17.3 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 35.1 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( •
•
) +
= (
• 2
•
)
By formula: (H4N+ • H2O • H3N) + H2O = (H4N+ • 2H2O • H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 12.7 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 25.0 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( •
• 2
) +
= (
• 2
• 2
)
By formula: (H4N+ • H2O • 2H3N) + H2O = (H4N+ • 2H2O • 2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 11.7 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 27.8 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( • 2
•
) +
= (
• 3
•
)
By formula: (H4N+ • 2H2O • H3N) + H2O = (H4N+ • 3H2O • H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 12.2 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 28.5 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( •
) +
= (
•
•
)
By formula: (H4N+ • H2O) + O2S = (H4N+ • O2S • H2O)
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 6.4 | 300. | HPMS | Banic and Iribarne, 1985 | gas phase; electric fields |
( • 2
) +
= (
•
• 2
)
By formula: (H4N+ • 2H2O) + O2S = (H4N+ • O2S • 2H2O)
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 5.0 | 300. | HPMS | Banic and Iribarne, 1985 | gas phase; electric fields |
( • 3
) +
= (
•
• 3
)
By formula: (H4N+ • 3H2O) + O2S = (H4N+ • O2S • 3H2O)
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 3.6 | 300. | HPMS | Banic and Iribarne, 1985 | gas phase; electric fields |
( •
•
) +
= (
• 2
•
)
By formula: (H4N+ • H2O • O2S) + H2O = (H4N+ • 2H2O • O2S)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 7.4 | kcal/mol | HPMS | Banic and Iribarne, 1985 | gas phase; From thermochemical cycle,switching reaction, electric fields |
( • 2
•
) +
= (
• 3
•
)
By formula: (H4N+ • 2H2O • O2S) + H2O = (H4N+ • 3H2O • O2S)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrG° | 5.2 | kcal/mol | HPMS | Banic and Iribarne, 1985 | gas phase; From thermochemical cycle,switching reaction, electric fields |
+
= (
•
)
By formula: H4N+ + H2S = (H4N+ • H2S)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 11.4 | kcal/mol | PHPMS | Meot-Ner (Mautner) and Sieck, 1985 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 16.7 | cal/mol*K | PHPMS | Meot-Ner (Mautner) and Sieck, 1985 | gas phase |
+
= (
•
)
By formula: H4N+ + H3N = (H4N+ • H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 26. ± 2. | kcal/mol | AVG | N/A | Average of 4 out of 9 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 26. ± 3. | cal/mol*K | AVG | N/A | Average of 4 out of 6 values; Individual data points |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 6.3 | 400. | HPMS | Wincel, 1972 | gas phase |
( •
) +
= (
•
•
)
By formula: (H4N+ • H3N) + CHN = (H4N+ • CHN • H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 14.2 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 18.5 | cal/mol*K | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase |
( • 2
) +
= (
•
• 2
)
By formula: (H4N+ • 2H3N) + CHN = (H4N+ • CHN • 2H3N)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 13.4 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 18.3 | cal/mol*K | N/A | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
( •
• 2
) +
= (
• 2
• 2
)
By formula: (H4N+ • H3N • 2CHN) + H3N = (H4N+ • 2H3N • 2CHN)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 12.9 | kcal/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 20. | cal/mol*K | N/A | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 6.6 | 315. | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated |
( •
•
) +
= (
• 2
•
)
By formula: (H4N+ • H3N • C2H3N) + H3N = (H4N+ • 2H3N • C2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 15.5 | kcal/mol | MKER | Tzeng, Wei, et al., 1991 | gas phase; from graph |
( • 2
•
) +
= (
• 3
•
)
By formula: (H4N+ • 2H3N • C2H3N) + H3N = (H4N+ • 3H3N • C2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 13.6 | kcal/mol | MKER | Tzeng, Wei, et al., 1991 | gas phase; from graph |
( • 3
•
) +
= (
• 4
•
)
By formula: (H4N+ • 3H3N • C2H3N) + H3N = (H4N+ • 4H3N • C2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 7.4 | kcal/mol | MKER | Tzeng, Wei, et al., 1991 | gas phase; from graph |
( • 4
•
) +
= (
• 5
•
)
By formula: (H4N+ • 4H3N • C2H3N) + H3N = (H4N+ • 5H3N • C2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 6.9 | kcal/mol | MKER | Tzeng, Wei, et al., 1991 | gas phase; from graph |
( • 5
•
) +
= (
• 6
•
)
By formula: (H4N+ • 5H3N • C2H3N) + H3N = (H4N+ • 6H3N • C2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 6.0 | kcal/mol | MKER | Tzeng, Wei, et al., 1991 | gas phase; from graph |
( • 6
•
) +
= (
• 7
•
)
By formula: (H4N+ • 6H3N • C2H3N) + H3N = (H4N+ • 7H3N • C2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 5.5 | kcal/mol | MKER | Tzeng, Wei, et al., 1991 | gas phase; from graph |
( • 7
•
) +
= (
• 8
•
)
By formula: (H4N+ • 7H3N • C2H3N) + H3N = (H4N+ • 8H3N • C2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 6.0 | kcal/mol | MKER | Tzeng, Wei, et al., 1991 | gas phase; from graph |
( • 8
•
) +
= (
• 9
•
)
By formula: (H4N+ • 8H3N • C2H3N) + H3N = (H4N+ • 9H3N • C2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 5.5 | kcal/mol | MKER | Tzeng, Wei, et al., 1991 | gas phase; from graph |
( •
) +
= (
•
•
)
By formula: (H4N+ • H3N) + H2O = (H4N+ • H2O • H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 12.9 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 20.3 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( • 2
) +
= (
•
• 2
)
By formula: (H4N+ • 2H3N) + H2O = (H4N+ • H2O • 2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 12.4 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 24.6 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( • 3
) +
= (
•
• 3
)
By formula: (H4N+ • 3H3N) + H2O = (H4N+ • H2O • 3H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 11.7 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 27.9 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( •
•
) +
= (
• 2
•
)
By formula: (H4N+ • H3N • H2O) + H3N = (H4N+ • 2H3N • H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 17.1 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 31.8 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( •
• 2
) +
= (
• 2
• 2
)
By formula: (H4N+ • H3N • 2H2O) + H3N = (H4N+ • 2H3N • 2H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 15.7 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 33.9 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( • 2
•
) +
= (
• 3
•
)
By formula: (H4N+ • 2H3N • H2O) + H3N = (H4N+ • 3H3N • H2O)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 15.0 | kcal/mol | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 34.3 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase |
( •
) +
= (
• 2
)
By formula: (H4N+ • H3N) + H3N = (H4N+ • 2H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 17. ± 1. | kcal/mol | AVG | N/A | Average of 5 out of 8 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 23.9 | cal/mol*K | HPMS | Tang and Castleman, 1975 | gas phase |
| ΔrS° | 23.7 | cal/mol*K | PHPMS | Arshadi and Futrell, 1974 | gas phase |
| ΔrS° | 24.8 | cal/mol*K | DT | Long and Franklin, 1973 | gas phase |
| ΔrS° | 26.8 | cal/mol*K | PHPMS | Searles and Kebarle, 1968 | gas phase |
| ΔrS° | 22.9 | cal/mol*K | PHPMS | Payzant, Cunningham, et al., 1973 | gas phase; typographical error in ΔrH |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 9.7 | 296. | FA | Fehsenfeld and Ferguson, 1973 | gas phase; DG> |
| 10.1 | 296. | SAMS | Puckett and Teague, 1971 | gas phase |
| 5.5 | 400. | HPMS | Wincel, 1972 | gas phase |
( • 2
) +
= (
• 3
)
By formula: (H4N+ • 2H3N) + H3N = (H4N+ • 3H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 13. ± 5. | kcal/mol | AVG | N/A | Average of 6 out of 9 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 25. ± 1. | cal/mol*K | AVG | N/A | Average of 4 out of 7 values; Individual data points |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 6.5 | 296. | FA | Fehsenfeld and Ferguson, 1973 | gas phase |
| 6.4 | 296. | SAMS | Puckett and Teague, 1971 | gas phase |
( • 3
) +
= (
• 4
)
By formula: (H4N+ • 3H3N) + H3N = (H4N+ • 4H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 12.2 ± 0.9 | kcal/mol | AVG | N/A | Average of 5 out of 10 values; Individual data points |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 28. ± 2. | cal/mol*K | AVG | N/A | Average of 3 out of 7 values; Individual data points |
Free energy of reaction
| ΔrG° (kcal/mol) | T (K) | Method | Reference | Comment |
|---|---|---|---|---|
| 3.4 | 296. | FA | Fehsenfeld and Ferguson, 1973 | gas phase |
( • 4
) +
= (
• 5
)
By formula: (H4N+ • 4H3N) + H3N = (H4N+ • 5H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 7.0 | kcal/mol | PHPMS | Arshadi and Futrell, 1974 | gas phase |
| ΔrH° | 7.5 | kcal/mol | PHPMS | Searles and Kebarle, 1968 | gas phase |
| ΔrH° | 7. | kcal/mol | MKER | Wei, Tzeng, et al., 1990 | gas phase; from graph |
| ΔrH° | 2.8 | kcal/mol | TPEPICO | Kamke, Herrmann, et al., 1988 | gas phase |
| ΔrH° | 9.6 | kcal/mol | DT | Long and Franklin, 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 21.5 | cal/mol*K | PHPMS | Arshadi and Futrell, 1974 | gas phase |
| ΔrS° | 25. | cal/mol*K | PHPMS | Searles and Kebarle, 1968 | gas phase |
| ΔrS° | 32. | cal/mol*K | DT | Long and Franklin, 1973 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrG° | 0.5 | kcal/mol | HPMS | Hogg, Haynes, et al., 1966 | gas phase |
( • 5
) +
= (
• 6
)
By formula: (H4N+ • 5H3N) + H3N = (H4N+ • 6H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 6.5 | kcal/mol | PHPMS | Arshadi and Futrell, 1974 | gas phase |
| ΔrH° | 6. | kcal/mol | MKER | Wei, Tzeng, et al., 1990 | gas phase; from graph |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 21.9 | cal/mol*K | PHPMS | Arshadi and Futrell, 1974 | gas phase |
( • 6
) +
= (
• 7
)
By formula: (H4N+ • 6H3N) + H3N = (H4N+ • 7H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 5. | kcal/mol | MKER | Wei, Tzeng, et al., 1990 | gas phase; from graph |
( • 7
) +
= (
• 8
)
By formula: (H4N+ • 7H3N) + H3N = (H4N+ • 8H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 5. | kcal/mol | MKER | Wei, Tzeng, et al., 1990 | gas phase; from graph |
( • 8
) +
= (
• 9
)
By formula: (H4N+ • 8H3N) + H3N = (H4N+ • 9H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 4. | kcal/mol | MKER | Wei, Tzeng, et al., 1990 | gas phase; from graph |
( • 9
) +
= (
• 10
)
By formula: (H4N+ • 9H3N) + H3N = (H4N+ • 10H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 4. | kcal/mol | MKER | Wei, Tzeng, et al., 1990 | gas phase; from graph |
( • 10
) +
= (
• 11
)
By formula: (H4N+ • 10H3N) + H3N = (H4N+ • 11H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 5. | kcal/mol | MKER | Wei, Tzeng, et al., 1990 | gas phase; from graph |
( • 11
) +
= (
• 12
)
By formula: (H4N+ • 11H3N) + H3N = (H4N+ • 12H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 4. | kcal/mol | MKER | Wei, Tzeng, et al., 1990 | gas phase; from graph |
( • 12
) +
= (
• 13
)
By formula: (H4N+ • 12H3N) + H3N = (H4N+ • 13H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 5. | kcal/mol | MKER | Wei, Tzeng, et al., 1990 | gas phase; from graph |
( • 13
) +
= (
• 14
)
By formula: (H4N+ • 13H3N) + H3N = (H4N+ • 14H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 4. | kcal/mol | MKER | Wei, Tzeng, et al., 1990 | gas phase; from graph |
( • 14
) +
= (
• 15
)
By formula: (H4N+ • 14H3N) + H3N = (H4N+ • 15H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 4. | kcal/mol | MKER | Wei, Tzeng, et al., 1990 | gas phase; from graph |
( • 15
) +
= (
• 16
)
By formula: (H4N+ • 15H3N) + H3N = (H4N+ • 16H3N)
Bond type: Hydrogen bond (positive ion to hydride)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 4. | kcal/mol | MKER | Wei, Tzeng, et al., 1990 | gas phase; from graph |
+
= (
•
)
By formula: H4N+ + N2 = (H4N+ • N2)
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔrH° | 13. ± 5. | kcal/mol | DT | Gheno and Fitaire, 1987 | gas phase |
| Quantity | Value | Units | Method | Reference | Comment |
| ΔrS° | 31. | cal/mol*K | DT | Gheno and Fitaire, 1987 | gas phase |
References
Go To: Top, Reaction thermochemistry data, Ion clustering data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
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J. Phys. Chem., 1991, 95, 3, 1112, https://doi.org/10.1021/j100156a018
. [all data]
Gheno and Fitaire, 1987
Gheno, F.; Fitaire, M.,
Association of N2 with NH4+ and H3O+(H2O)n, n = 1,2,3,
J. Chem. Phys., 1987, 87, 2, 953, https://doi.org/10.1063/1.453250
. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Ion clustering data, References
- Symbols used in this document:
T Temperature ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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