Hydrogen cyanide
- Formula: CHN
- Molecular weight: 27.0253
- IUPAC Standard InChIKey: LELOWRISYMNNSU-UHFFFAOYSA-N
- CAS Registry Number: 74-90-8
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Hydrocyanic acid; AC; Blausaeure (German); Carbon hydride nitride (CHN); Formic anammonide; Formonitrile; HCN; Prussic Acid; Cyclon; Acide cyanhydrique; Acido cianidrico; Aero Liquid HCN; Blausaeure; Blauwzuur; Cyaanwaterstof; Cyanwasserstoff; Cyclone B; Cyjanowodor; Evercyn; NA 1051; Prussic acid, unstabilized; Rcra waste number P063; UN 1051; Zaclondiscoids; Carbon hydride nitride; Zootic acid; Agent AC; Nitrilomethane
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Gas phase thermochemistry data
Go To: Top, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, References, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔfH°gas | 135.14 | kJ/mol | Review | Chase, 1998 | Data last reviewed in December, 1969 |
Quantity | Value | Units | Method | Reference | Comment |
S°gas,1 bar | 201.82 | J/mol*K | Review | Chase, 1998 | Data last reviewed in December, 1969 |
Gas Phase Heat Capacity (Shomate Equation)
Cp° = A + B*t + C*t2 + D*t3 +
E/t2
H° − H°298.15= A*t + B*t2/2 +
C*t3/3 + D*t4/4 − E/t + F − H
S° = A*ln(t) + B*t + C*t2/2 + D*t3/3 −
E/(2*t2) + G
Cp = heat capacity (J/mol*K)
H° = standard enthalpy (kJ/mol)
S° = standard entropy (J/mol*K)
t = temperature (K) / 1000.
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Temperature (K) | 298. to 1200. | 1200. to 6000. |
---|---|---|
A | 32.69373 | 52.36527 |
B | 22.59205 | 5.563298 |
C | -4.369142 | -0.953224 |
D | -0.407697 | 0.056711 |
E | -0.282399 | -7.564086 |
F | 123.4811 | 103.8523 |
G | 233.2597 | 244.8448 |
H | 135.1432 | 135.1432 |
Reference | Chase, 1998 | Chase, 1998 |
Comment | Data last reviewed in December, 1969 | Data last reviewed in December, 1969 |
Condensed phase thermochemistry data
Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law 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: Eugene S. Domalski and Elizabeth D. Hearing
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
S°liquid | 113.01 | J/mol*K | N/A | Giauque and Ruehrwein, 1939 |
Constant pressure heat capacity of liquid
Cp,liquid (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
71.00 | 300. | Giauque and Ruehrwein, 1939 | T = 15 to 300 K. |
Phase change data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Henry's Law 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 as indicated in comments:
TRC - Thermodynamics Research Center, NIST Boulder Laboratories, Chris Muzny director
DH - Eugene S. Domalski and Elizabeth D. Hearing
AC - William E. Acree, Jr., James S. Chickos
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
Tboil | 299.0 ± 0.5 | K | AVG | N/A | Average of 15 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Tfus | 260. ± 1. | K | AVG | N/A | Average of 13 out of 14 values; Individual data points |
Quantity | Value | Units | Method | Reference | Comment |
Ttriple | 259.86 | K | N/A | Giauque and Ruehrwein, 1939, 2 | Crystal phase 1 phase; Uncertainty assigned by TRC = 0.02 K; TRC |
Enthalpy of vaporization
ΔvapH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
25.217 | 298.85 | N/A | Giauque and Ruehrwein, 1939 | P = 101.325 kPa.; DH |
28.1 | 274. | A | Stephenson and Malanowski, 1987 | Based on data from 259. to 299. K.; AC |
27.8 | 313. | A | Stephenson and Malanowski, 1987 | Based on data from 298. to 457. K.; AC |
28.1 | 272. | N/A | Iwasaki and Date, 1975 | Based on data from 257. to 315. K.; AC |
28.0 | 277. | N/A | Lewis and Schutz, 1934 | Based on data from 259. to 294. K.; AC |
27.8 | 282. | N/A | Perry and Porter, 1926 | Based on data from 265. to 300. K.; AC |
28.1 | 272. | N/A | Sinozaki, Hara, et al., 1926 | Based on data from 257. to 319. K.; AC |
27.2 | 303. | MM | Sinozaki, Hara, et al., 1926 | Based on data from 256. to 319. K.; AC |
Entropy of vaporization
ΔvapS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
84.38 | 298.85 | Giauque and Ruehrwein, 1939 | P; DH |
Antoine Equation Parameters
log10(P) = A − (B / (T + C))
P = vapor pressure (bar)
T = temperature (K)
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Temperature (K) | A | B | C | Reference | Comment |
---|---|---|---|---|---|
256.73 to 319.38 | 4.67417 | 1340.791 | -11.592 | Sinozaki, Hara, et al., 1926 | Coefficents calculated by NIST from author's data. |
Enthalpy of sublimation
ΔsubH (kJ/mol) | Temperature (K) | Method | Reference | Comment |
---|---|---|---|---|
35.6 | 248. | N/A | Stephenson and Malanowski, 1987 | Based on data from 236. to 259. K.; AC |
37.6 | 228. | A | Stull, 1947 | Based on data from 202. to 254. K.; AC |
Enthalpy of fusion
ΔfusH (kJ/mol) | Temperature (K) | Reference | Comment |
---|---|---|---|
8.406 | 259.90 | Giauque and Ruehrwein, 1939 | DH |
Entropy of fusion
ΔfusS (J/mol*K) | Temperature (K) | Reference | Comment |
---|---|---|---|
32.34 | 259.90 | Giauque and Ruehrwein, 1939 | DH |
Reaction thermochemistry data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Henry's Law 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 as indicated in comments:
B - John E. Bartmess
M - 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
By formula: CN- + CHN = (CN- • CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 91. ± 15. | kJ/mol | IMRE | Larson and McMahon, 1987 | gas phase; B,M |
ΔrH° | 83.7 ± 8.4 | kJ/mol | Est | Larson and McMahon, 1984 | gas phase; B |
ΔrH° | 86.6 | kJ/mol | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
ΔrH° | 86.6 | kJ/mol | PHPMS | Meot-ner, 1988 | gas phase; M,B,B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 86.2 | J/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
ΔrS° | 86.2 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
ΔrS° | 86.2 | J/mol*K | PHPMS | Meot-ner, 1988 | gas phase; M |
ΔrS° | 113. | J/mol*K | N/A | Larson and McMahon, 1987 | gas phase; switching reaction,Thermochemical ladder(H2O), Entropy change calculated or estimated; Payzant, Yamdagni, et al., 1971; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 60.7 ± 4.2 | kJ/mol | TDAs | Meot-ner, 1988 | gas phase; B |
ΔrG° | 57.3 ± 9.6 | kJ/mol | IMRE | Larson and McMahon, 1987 | gas phase; B,M |
ΔrG° | 60.7 ± 6.7 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: F- + CHN = (F- • CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 165. ± 8.4 | kJ/mol | IMRE | Larson and McMahon, 1983 | gas phase; These relative affinities are ca. 10 kcal/mol weaker than threshold values (see Wenthold and Squires, 1995) for donors greater than ca. 27 kcal/mol in free energy. This discrepancy has not yet been resolved, though the stronger value appears preferable.; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 92.9 | J/mol*K | N/A | Larson and McMahon, 1983 | gas phase; switching reaction(F-)H2O, Entropy change calculated or estimated; Arshadi, Yamdagni, et al., 1970; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 138. ± 8.4 | kJ/mol | IMRE | Larson and McMahon, 1983 | gas phase; These relative affinities are ca. 10 kcal/mol weaker than threshold values (see Wenthold and Squires, 1995) for donors greater than ca. 27 kcal/mol in free energy. This discrepancy has not yet been resolved, though the stronger value appears preferable.; B,M |
By formula: Li+ + CHN = (Li+ • CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 152. | kJ/mol | ICR | Woodin and Beauchamp, 1978 | gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M |
ΔrH° | 150. | kJ/mol | ICR | Staley and Beauchamp, 1975 | gas phase; switching reaction(Li+)H2O, from graph; Dzidic and Kebarle, 1970 extrapolated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 100. | J/mol*K | N/A | Woodin and Beauchamp, 1978 | gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 120. | kJ/mol | ICR | Woodin and Beauchamp, 1978 | gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M |
By formula: Cl- + CHN = (Cl- • CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 91.2 ± 4.2 | kJ/mol | TDAs | Meot-ner, 1988 | gas phase; B,B,M |
ΔrH° | 87.9 ± 8.4 | kJ/mol | IMRE | Larson and McMahon, 1984, 2 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 79.1 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
ΔrS° | 99.2 | J/mol*K | N/A | Larson and McMahon, 1984, 3 | gas phase; switching reaction(Cl-)t-C4H9OH, Entropy change calculated or estimated; French, Ikuta, et al., 1982; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 67.8 ± 6.7 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
ΔrG° | 67.4 ± 4.2 | kJ/mol | TDAs | Meot-ner, 1988 | gas phase; B |
ΔrG° | 58.2 ± 8.4 | kJ/mol | IMRE | Larson and McMahon, 1984, 2 | gas phase; B,M |
CN- + =
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 1464. ± 4.2 | kJ/mol | CIDT | Akin and Ervin, 2006 | gas phase; B |
ΔrH° | 1466.5 ± 0.71 | kJ/mol | D-EA | Bradforth, Kim, et al., 1993 | gas phase; B |
ΔrH° | 1469. ± 8.8 | kJ/mol | G+TS | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 1433. ± 4.6 | kJ/mol | H-TS | Akin and Ervin, 2006 | gas phase; B |
ΔrG° | 1435.8 ± 1.1 | kJ/mol | H-TS | Bradforth, Kim, et al., 1993 | gas phase; B |
ΔrG° | 1438. ± 8.4 | kJ/mol | IMRE | Bartmess, Scott, et al., 1979 | gas phase; value altered from reference due to change in acidity scale; B |
By formula: CHO2- + CHN = (CHO2- • CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 92.0 | kJ/mol | PHPMS | Meot-ner, 1988 | gas phase; M,B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 92. | J/mol*K | N/A | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy change calculated or estimated; M |
ΔrS° | 89.5 | J/mol*K | PHPMS | Meot-ner, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 65.3 ± 6.7 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy of 22.0 eu assumed.; B |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
49.4 | 473. | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy change calculated or estimated; M |
By formula: (CHO2- • CHN) + CHN = (CHO2- • 2CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 74.5 | kJ/mol | PHPMS | Meot-ner, 1988 | gas phase; M,B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 92. | J/mol*K | N/A | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy change calculated or estimated; M |
ΔrS° | 98.7 | J/mol*K | PHPMS | Meot-ner, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 44.77 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy estimated; B |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
40. | 350. | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy change calculated or estimated; M |
By formula: (H4N+ • 3CHN • H3N) + CHN = (H4N+ • 4CHN • H3N)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 36. | kJ/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated, T = 392 in paper is error; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84. | J/mol*K | N/A | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated, T = 392 in paper is error; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
11. | 292. | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated, T = 392 in paper is error; M |
By formula: (Cl- • 8CHN) + CHN = (Cl- • 9CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 31. ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy estimated; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 100. | J/mol*K | N/A | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 0.42 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy estimated; B |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
13. | 171. | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy change calculated or estimated; M |
By formula: (C2H3O2- • 4CHN) + CHN = (C2H3O2- • 5CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 41. ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy estimated; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 100. | J/mol*K | N/A | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 10.0 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy estimated; B |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
19. | 213. | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy change calculated or estimated; M |
By formula: (CN- • 6CHN) + CHN = (CN- • 7CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 32. ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy estimated; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84. | J/mol*K | N/A | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 6.69 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy estimated; B |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
13. | 238. | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; Entropy change calculated or estimated; M |
By formula: (CN- • 2CHN) + CHN = (CN- • 3CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 52.7 | kJ/mol | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
ΔrH° | 52.7 | kJ/mol | PHPMS | Meot-ner, 1988 | gas phase; M,B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 88.7 | J/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
ΔrS° | 88.7 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
ΔrS° | 88.7 | J/mol*K | PHPMS | Meot-ner, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 26.4 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (CN- • 3CHN) + CHN = (CN- • 4CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 45.6 | kJ/mol | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
ΔrH° | 45.6 | kJ/mol | PHPMS | Meot-ner, 1988 | gas phase; M,B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 104. | J/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
ΔrS° | 104. | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
ΔrS° | 104. | J/mol*K | PHPMS | Meot-ner, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 14.6 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (CN- • CHN) + CHN = (CN- • 2CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 68.6 | kJ/mol | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
ΔrH° | 68.6 | kJ/mol | PHPMS | Meot-ner, 1988 | gas phase; M,B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 91.2 | J/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
ΔrS° | 91.2 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
ΔrS° | 91.2 | J/mol*K | PHPMS | Meot-ner, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 41.4 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: CH2N+ + CHN = (CH2N+ • CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 109. | kJ/mol | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase; ΔrH, ΔrS too small compared with other nitrile dimers; M |
ΔrH° | 126. | kJ/mol | PHPMS | Meot-Ner (Mautner), 1978 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 96.2 | J/mol*K | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase; ΔrH, ΔrS too small compared with other nitrile dimers; M |
ΔrS° | 130. | J/mol*K | PHPMS | Meot-Ner (Mautner), 1978 | gas phase; M |
By formula: (CN- • H2O • 2CHN) + H2O = (CN- • 2H2O • 2CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 37. ± 4.2 | kJ/mol | TDAs | Meot-Ner (Mautner) M. and Speller, 1989 | gas phase; Entropy estimated; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84. | J/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 12. ± 5.9 | kJ/mol | TDAs | Meot-Ner (Mautner) M. and Speller, 1989 | gas phase; Entropy estimated; B |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
15. | 262. | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
By formula: (CN- • 3CHN) + H2O = (CN- • H2O • 3CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 39. ± 4.2 | kJ/mol | TDAs | Meot-Ner (Mautner) M. and Speller, 1989 | gas phase; Entropy estimated; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84. | J/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 14. ± 5.9 | kJ/mol | TDAs | Meot-Ner (Mautner) M. and Speller, 1989 | gas phase; Entropy estimated; B |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
18. | 262. | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
(CH2N+ • •
) +
= (CH2N+ • 2
•
)
By formula: (CH2N+ • CHN • H2O) + CHN = (CH2N+ • 2CHN • H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 65.3 | kJ/mol | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n, Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 100. | J/mol*K | N/A | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n, Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 35. | kJ/mol | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n, Entropy change calculated or estimated; M |
By formula: (H4N+ • H3N • 2CHN) + H3N = (H4N+ • 2H3N • 2CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 54.0 | kJ/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84. | J/mol*K | N/A | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
28. | 315. | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated; M |
By formula: (H4N+ • CHN • 2H3N) + CHN = (H4N+ • 2CHN • 2H3N)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 46.9 | kJ/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84. | J/mol*K | N/A | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
21. | 315. | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated; M |
By formula: (CN- • 4CHN) + CHN = (CN- • 5CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 41. ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
ΔrH° | 41. | kJ/mol | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84.5 | J/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
ΔrS° | 84.5 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 15.9 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (H4N+ • CHN) + H3N = (H4N+ • H3N • CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 78.7 | kJ/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 92. | J/mol*K | N/A | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
39. | 429. | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; Entropy change calculated or estimated; M |
By formula: Br- + CHN = (Br- • CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 81.2 ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
ΔrH° | 66.9 ± 8.4 | kJ/mol | Est | Larson and McMahon, 1984 | gas phase; Extrapolated from other halide data; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 82.8 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 56.5 ± 6.7 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: C4H9O2+ + CHN = (C4H9O2+ • CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 79.5 | kJ/mol | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 96. | J/mol*K | N/A | Speller and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
33. | 455. | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase; Entropy change calculated or estimated; M |
By formula: C3H7+ + CHN = (C3H7+ • CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 166. | kJ/mol | PHPMS | Meot-Ner (Mautner) and Sieck, 1991 | gas phase; condensation; M |
ΔrH° | 129. | kJ/mol | PHPMS | Meot-Ner (Mautner), 1978 | gas phase; forms i-C3H7NCH+; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 189. | J/mol*K | PHPMS | Meot-Ner (Mautner) and Sieck, 1991 | gas phase; condensation; M |
ΔrS° | 130. | J/mol*K | PHPMS | Meot-Ner (Mautner), 1978 | gas phase; forms i-C3H7NCH+; M |
By formula: HS- + CHN = (HS- • CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 87.9 ± 4.2 | kJ/mol | IMRE | Meot-ner, 1988 | gas phase; See also H2S..CN-; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84. | J/mol*K | PHPMS | Meot-ner, 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 62.8 ± 4.2 | kJ/mol | IMRE | Meot-ner, 1988 | gas phase; See also H2S..CN-; B |
By formula: H4N+ + CHN = (H4N+ • CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 91.6 | kJ/mol | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; M |
ΔrH° | 85.8 | kJ/mol | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 97.9 | J/mol*K | PHPMS | Deakyne, Knuth, et al., 1994 | gas phase; M |
ΔrS° | 84.5 | J/mol*K | PHPMS | Speller and Meot-Ner (Mautner), 1985 | gas phase; M |
By formula: (CN- • H2O • CHN) + H2O = (CN- • 2H2O • CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 40. ± 4.2 | kJ/mol | TDAs | Meot-Ner (Mautner) M. and Speller, 1989 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 73.2 | J/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 18. ± 5.9 | kJ/mol | TDAs | Meot-Ner (Mautner) M. and Speller, 1989 | gas phase; B |
By formula: (CN- • 2CHN) + H2O = (CN- • H2O • 2CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 32. ± 4.2 | kJ/mol | TDAs | Meot-Ner (Mautner) M. and Speller, 1989 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 52.3 | J/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 17. ± 5.9 | kJ/mol | TDAs | Meot-Ner (Mautner) M. and Speller, 1989 | gas phase; B |
By formula: (CN- • CHN) + H2O = (CN- • H2O • CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 51.9 ± 4.2 | kJ/mol | TDAs | Meot-Ner (Mautner) M. and Speller, 1989 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 82.4 | J/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 27. ± 5.9 | kJ/mol | TDAs | Meot-Ner (Mautner) M. and Speller, 1989 | gas phase; B |
By formula: (Cl- • 7CHN) + CHN = (Cl- • 8CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 34. ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 115. | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 0.1 ± 9.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (CN- • CHN • 2H2O) + CHN = (CN- • 2CHN • 2H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 52.7 | kJ/mol | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84. | J/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
31. | 262. | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
By formula: (CN- • 2CHN • H2O) + CHN = (CN- • 3CHN • H2O)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 51.5 | kJ/mol | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84. | J/mol*K | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
Free energy of reaction
ΔrG° (kJ/mol) | T (K) | Method | Reference | Comment |
---|---|---|---|---|
30. | 262. | PHPMS | Meot-Ner (Mautner) and Speller, 1989 | gas phase; n; M |
By formula: (Cl- • 2CHN) + CHN = (Cl- • 3CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 56.9 ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 89.5 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 30.1 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (Cl- • 3CHN) + CHN = (Cl- • 4CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 46.9 ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 97.9 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 17.6 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (Cl- • CHN) + CHN = (Cl- • 2CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 74.9 ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 95.0 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 46.44 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (I- • 2CHN) + CHN = (I- • 3CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 46.9 ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 87.9 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 20.5 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (Br- • 2CHN) + CHN = (Br- • 3CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 53.6 ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 91.6 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 26.4 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (Br- • 3CHN) + CHN = (Br- • 4CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 43.5 ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 92.5 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 15.9 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (Cl- • 4CHN) + CHN = (Cl- • 5CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 37. ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 89.1 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 10.5 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (Cl- • 5CHN) + CHN = (Cl- • 6CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 36. ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 102. | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 6.28 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (Cl- • 6CHN) + CHN = (Cl- • 7CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 33. ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 96.7 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 4.18 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (I- • 3CHN) + CHN = (I- • 4CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 38. ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 84.9 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 13.4 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (I- • 4CHN) + CHN = (I- • 5CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 36. ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 95.8 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 7.53 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (I- • 5CHN) + CHN = (I- • 6CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 31. ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 83.3 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 6.28 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (I- • 6CHN) + CHN = (I- • 7CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 31. ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 83.3 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 6.28 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (I- • 7CHN) + CHN = (I- • 8CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 28. ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 88.7 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 2.1 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (I- • CHN) + CHN = (I- • 2CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 55.2 ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 83.7 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 30.1 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (Br- • 4CHN) + CHN = (Br- • 5CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 34. ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 77.4 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 10.9 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
By formula: (Br- • CHN) + CHN = (Br- • 2CHN)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 68.2 ± 4.2 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B,M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 95.0 | J/mol*K | PHPMS | Meot-ner, Cybulski, et al., 1988 | gas phase; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 39.7 | kJ/mol | TDAs | Meot-ner, Cybulski, et al., 1988 | gas phase; B |
Henry's Law data
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, 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: Rolf Sander
Henry's Law constant (water solution)
kH(T) = k°H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 K)))
k°H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(kH))/d(1/T) = Temperature dependence constant (K)
k°H (mol/(kg*bar)) | d(ln(kH))/d(1/T) (K) | Method | Reference | Comment |
---|---|---|---|---|
7.5 | X | N/A | Value given here as quoted by missing citation. | |
12. | 5000. | L | N/A | |
9.3 | R | N/A |
References
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Chase, 1998
Chase, M.W., Jr.,
NIST-JANAF Themochemical Tables, Fourth Edition,
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Giauque, W.F.; Ruehrwein, R.A.,
The entropy of hydrogen cyanide. Heat capacity, heat of vaporization and vapor pressure. Hydrogen bond polymerization of the gas in chains of indefinite length,
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Giauque and Ruehrwein, 1939, 2
Giauque, W.F.; Ruehrwein, R.A.,
The Entropy of Hydrogen Cyanide. Heat Capacity, Heat of Vaporization and Vapor Pressure. Hydrogen Bond Polymerization of the Gas in Chains of Indefinite Length.,
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Stephenson and Malanowski, 1987
Stephenson, Richard M.; Malanowski, Stanislaw,
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. [all data]
Iwasaki and Date, 1975
Iwasaki, H.; Date, K.,
Koatsu Gasu, 1975, 12, 374. [all data]
Lewis and Schutz, 1934
Lewis, Gilbert N.; Schutz, Philip W.,
THE VAPOR PRESSURE OF LIQUID AND SOLID DEUTOCYANIC ACID,
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. [all data]
Perry and Porter, 1926
Perry, J.H.; Porter, Frank,
THE VAPOR PRESSURES OF SOLID AND LIQUID HYDROGEN CYANIDE 1,
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. [all data]
Sinozaki, Hara, et al., 1926
Sinozaki, Heima; Hara, Ryozaburo; Mitsukuri, Shinroku,
THE VAPOUR PRESSURES OF HYDROGEN CYANIDE,
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. [all data]
Stull, 1947
Stull, Daniel R.,
Vapor Pressure of Pure Substances. Organic and Inorganic Compounds,
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. [all data]
Larson and McMahon, 1987
Larson, J.W.; McMahon, T.B.,
Hydrogen bonding in gas phase anions. The energetics of interaction between cyanide ion and bronsted acids,
J. Am. Chem. Soc., 1987, 109, 6230. [all data]
Larson and McMahon, 1984
Larson, J.W.; McMahon, T.B.,
Gas phase bihalide and pseudohalide ions. An ICR determination of hydrogen bond energies in XHY- species (X,Y = F, Cl, Br, CN),
Inorg. Chem., 1984, 23, 2029. [all data]
Meot-Ner (Mautner) and Speller, 1989
Meot-Ner (Mautner), M.; Speller, C.V.,
Multicomponent Cluster Ions.3. Comparative Stabilities of Cationic and Anionic Hydrogen Bonded Networks. Mixed Clusters of Water and Hydrogen Cyanide,
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Meot-ner, 1988
Meot-ner, M.,
Ionic Hydrogen Bond and Ion Solvation. 6. Interaction Energies of the Acetate Ion with Organic Molecules. Comparison of CH3COO- with Cl-, CN-, and SH-,
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. [all data]
Meot-ner, Cybulski, et al., 1988
Meot-ner, M.; Cybulski, S.M.; Scheiner, S.; Liebman, J.F.,
Is CN- Significantly Anisotropic? Comparison of CN- vs. Cl-: Clustering with HCN and Condensed Phase Thermochemistry,
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. [all data]
Payzant, Yamdagni, et al., 1971
Payzant, J.D.; Yamdagni, R.; Kebarle, P.,
Hydration of CN-, NO2-, NO3-, and HO- in the gas phase,
Can. J. Chem., 1971, 49, 3308. [all data]
Larson and McMahon, 1983
Larson, J.W.; McMahon, T.B.,
Strong hydrogen bonding in gas-phase anions. An ion cyclotron resonance determination of fluoride binding energetics to bronsted acids from gas-phase fluoride exchange equilibria measurements,
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Wenthold and Squires, 1995
Wenthold, P.G.; Squires, R.R.,
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Notes
Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, References
- Symbols used in this document:
Cp,liquid Constant pressure heat capacity of liquid S°gas,1 bar Entropy of gas at standard conditions (1 bar) S°liquid Entropy of liquid at standard conditions T Temperature Tboil Boiling point Tfus Fusion (melting) point Ttriple Triple point temperature d(ln(kH))/d(1/T) Temperature dependence parameter for Henry's Law constant k°H Henry's Law constant at 298.15K ΔfH°gas Enthalpy of formation of gas at standard conditions ΔfusH Enthalpy of fusion ΔfusS Entropy of fusion ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions ΔsubH Enthalpy of sublimation ΔvapH Enthalpy of vaporization ΔvapS Entropy of vaporization - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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