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NH4+


Reaction thermochemistry data

Go To: Top, Vibrational and/or electronic energy levels, 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

(NH4+ bullet 3Ammonia) + Ammonia = (NH4+ bullet 4Ammonia)

By formula: (H4N+ bullet 3H3N) + H3N = (H4N+ bullet 4H3N)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar12.2 ± 0.9kcal/molAVGN/AAverage of 5 out of 10 values; Individual data points
Quantity Value Units Method Reference Comment
Deltar28. ± 2.cal/mol*KAVGN/AAverage of 3 out of 7 values; Individual data points

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
3.4296.FAFehsenfeld and Ferguson, 1973gas phase

(NH4+ bullet 2Ammonia) + Ammonia = (NH4+ bullet 3Ammonia)

By formula: (H4N+ bullet 2H3N) + H3N = (H4N+ bullet 3H3N)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar13. ± 5.kcal/molAVGN/AAverage of 6 out of 9 values; Individual data points
Quantity Value Units Method Reference Comment
Deltar25. ± 1.cal/mol*KAVGN/AAverage of 4 out of 7 values; Individual data points

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
6.5296.FAFehsenfeld and Ferguson, 1973gas phase
6.4296.SAMSPuckett and Teague, 1971gas phase

(NH4+ bullet Ammonia) + Ammonia = (NH4+ bullet 2Ammonia)

By formula: (H4N+ bullet H3N) + H3N = (H4N+ bullet 2H3N)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar17. ± 1.kcal/molAVGN/AAverage of 5 out of 8 values; Individual data points
Quantity Value Units Method Reference Comment
Deltar23.9cal/mol*KHPMSTang and Castleman, 1975gas phase
Deltar23.7cal/mol*KPHPMSArshadi and Futrell, 1974gas phase
Deltar24.8cal/mol*KDTLong and Franklin, 1973gas phase
Deltar26.8cal/mol*KPHPMSSearles and Kebarle, 1968gas phase
Deltar22.9cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase; typographical error in «DELTA»rH

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
9.7296.FAFehsenfeld and Ferguson, 1973gas phase; DG>
10.1296.SAMSPuckett and Teague, 1971gas phase
5.5400.HPMSWincel, 1972gas phase

NH4+ + Ammonia = (NH4+ bullet Ammonia)

By formula: H4N+ + H3N = (H4N+ bullet H3N)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar26. ± 2.kcal/molAVGN/AAverage of 4 out of 9 values; Individual data points
Quantity Value Units Method Reference Comment
Deltar26. ± 3.cal/mol*KAVGN/AAverage of 4 out of 6 values; Individual data points

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
6.3400.HPMSWincel, 1972gas phase

(NH4+ bullet Water) + Water = (NH4+ bullet 2Water)

By formula: (H4N+ bullet H2O) + H2O = (H4N+ bullet 2H2O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar17.4kcal/molPHPMSMeot-Ner (Mautner) and Speller, 1986gas phase; «DELTA»rH?, Entropy change is questionable, appear out of line
Deltar13.7kcal/molPHPMSMeot-Ner (Mautner), 1984gas phase; Entropy change calculated or estimated; «DELTA»rH of 12.4 kcal/mol from plot is too small
Deltar14.7kcal/molPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar28.6cal/mol*KPHPMSMeot-Ner (Mautner) and Speller, 1986gas phase; «DELTA»rH?, Entropy change is questionable, appear out of line
Deltar22.0cal/mol*KN/AMeot-Ner (Mautner), 1984gas phase; Entropy change calculated or estimated; «DELTA»rH of 12.4 kcal/mol from plot is too small
Deltar21.9cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar8.8kcal/molHPMSBanic and Iribarne, 1985gas phase; electric fields

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
4.6414.PHPMSMeot-Ner (Mautner), 1984gas phase; Entropy change calculated or estimated; «DELTA»rH of 12.4 kcal/mol from plot is too small

(NH4+ bullet 4Ammonia) + Ammonia = (NH4+ bullet 5Ammonia)

By formula: (H4N+ bullet 4H3N) + H3N = (H4N+ bullet 5H3N)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar7.0kcal/molPHPMSArshadi and Futrell, 1974gas phase
Deltar7.5kcal/molPHPMSSearles and Kebarle, 1968gas phase
Deltar7.kcal/molMKERWei, Tzeng, et al., 1990gas phase; from graph
Deltar2.8kcal/molTPEPICOKamke, Herrmann, et al., 1988gas phase
Deltar9.6kcal/molDTLong and Franklin, 1973gas phase
Quantity Value Units Method Reference Comment
Deltar21.5cal/mol*KPHPMSArshadi and Futrell, 1974gas phase
Deltar25.cal/mol*KPHPMSSearles and Kebarle, 1968gas phase
Deltar32.cal/mol*KDTLong and Franklin, 1973gas phase
Quantity Value Units Method Reference Comment
Deltar0.5kcal/molHPMSHogg, Haynes, et al., 1966gas phase

(NH4+ bullet 2Water) + Water = (NH4+ bullet 3Water)

By formula: (H4N+ bullet 2H2O) + H2O = (H4N+ bullet 3H2O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar13.7kcal/molPHPMSMeot-Ner (Mautner) and Speller, 1986gas phase
Deltar13.4kcal/molPHPMSPayzant, Cunningham, et al., 1973gas phase
Deltar12.2kcal/molPHPMSMeot-Ner (Mautner), 1984gas phase
Quantity Value Units Method Reference Comment
Deltar24.8cal/mol*KPHPMSMeot-Ner (Mautner) and Speller, 1986gas phase
Deltar25.1cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase
Deltar21.2cal/mol*KPHPMSMeot-Ner (Mautner), 1984gas phase
Quantity Value Units Method Reference Comment
Deltar6.5kcal/molHPMSBanic and Iribarne, 1985gas phase; electric fields

NH4+ + Water = (NH4+ bullet Water)

By formula: H4N+ + H2O = (H4N+ bullet H2O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar20.6kcal/molPHPMSMeot-Ner (Mautner) and Speller, 1986gas phase
Deltar19.9kcal/molPHPMSMeot-Ner (Mautner), 1984gas phase
Deltar17.3kcal/molPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar24.6cal/mol*KPHPMSMeot-Ner (Mautner) and Speller, 1986gas phase
Deltar23.1cal/mol*KPHPMSMeot-Ner (Mautner), 1984gas phase
Deltar19.7cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase

(NH4+ bullet 3Hydrogen cyanide bullet Ammonia) + Hydrogen cyanide = (NH4+ bullet 4Hydrogen cyanide bullet Ammonia)

By formula: (H4N+ bullet 3CHN bullet H3N) + CHN = (H4N+ bullet 4CHN bullet H3N)

Quantity Value Units Method Reference Comment
Deltar8.6kcal/molPHPMSDeakyne, Knuth, et al., 1994gas phase; Entropy change calculated or estimated, T = 392 in paper is error
Quantity Value Units Method Reference Comment
Deltar20.cal/mol*KN/ADeakyne, Knuth, et al., 1994gas phase; Entropy change calculated or estimated, T = 392 in paper is error

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
2.7292.PHPMSDeakyne, Knuth, et al., 1994gas phase; Entropy change calculated or estimated, T = 392 in paper is error

(NH4+ bullet 3Water) + Water = (NH4+ bullet 4Water)

By formula: (H4N+ bullet 3H2O) + H2O = (H4N+ bullet 4H2O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar10.8kcal/molPHPMSMeot-Ner (Mautner), 1984gas phase
Deltar12.2kcal/molPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar23.0cal/mol*KPHPMSMeot-Ner (Mautner), 1984gas phase
Deltar27.3cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar5.0kcal/molHPMSBanic and Iribarne, 1985gas phase; electric fields

NH4+ + Cyanogen = (NH4+ bullet Cyanogen)

By formula: H4N+ + C2N2 = (H4N+ bullet C2N2)

Quantity Value Units Method Reference Comment
Deltar10.4kcal/molPHPMSSpeller and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated, DG<, «DELTA»rH<
Quantity Value Units Method Reference Comment
Deltar23.cal/mol*KN/ASpeller and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated, DG<, «DELTA»rH<

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
3.2315.PHPMSSpeller and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated, DG<, «DELTA»rH<

NH4+ + Cyclohexane = (NH4+ bullet Cyclohexane)

By formula: H4N+ + C6H12 = (H4N+ bullet C6H12)

Quantity Value Units Method Reference Comment
Deltar9.kcal/molPHPMSDeakyne and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated, DG<, «DELTA»rH<
Quantity Value Units Method Reference Comment
Deltar20.cal/mol*KN/ADeakyne and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated, DG<, «DELTA»rH<

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
2.8317.PHPMSDeakyne and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated, DG<, «DELTA»rH<

(NH4+ bullet Ammonia bullet 2Hydrogen cyanide) + Ammonia = (NH4+ bullet 2Ammonia bullet 2Hydrogen cyanide)

By formula: (H4N+ bullet H3N bullet 2CHN) + H3N = (H4N+ bullet 2H3N bullet 2CHN)

Quantity Value Units Method Reference Comment
Deltar12.9kcal/molPHPMSDeakyne, Knuth, et al., 1994gas phase; Entropy change calculated or estimated
Quantity Value Units Method Reference Comment
Deltar20.cal/mol*KN/ADeakyne, Knuth, et al., 1994gas phase; Entropy change calculated or estimated

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
6.6315.PHPMSDeakyne, Knuth, et al., 1994gas phase; Entropy change calculated or estimated

(NH4+ bullet Hydrogen cyanide bullet 2Ammonia) + Hydrogen cyanide = (NH4+ bullet 2Hydrogen cyanide bullet 2Ammonia)

By formula: (H4N+ bullet CHN bullet 2H3N) + CHN = (H4N+ bullet 2CHN bullet 2H3N)

Quantity Value Units Method Reference Comment
Deltar11.2kcal/molPHPMSDeakyne, Knuth, et al., 1994gas phase; Entropy change calculated or estimated
Quantity Value Units Method Reference Comment
Deltar20.cal/mol*KN/ADeakyne, Knuth, et al., 1994gas phase; Entropy change calculated or estimated

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
4.9315.PHPMSDeakyne, Knuth, et al., 1994gas phase; Entropy change calculated or estimated

(NH4+ bullet Hydrogen cyanide) + Ammonia = (NH4+ bullet Ammonia bullet Hydrogen cyanide)

By formula: (H4N+ bullet CHN) + H3N = (H4N+ bullet H3N bullet CHN)

Quantity Value Units Method Reference Comment
Deltar18.8kcal/molPHPMSDeakyne, Knuth, et al., 1994gas phase; Entropy change calculated or estimated
Quantity Value Units Method Reference Comment
Deltar22.cal/mol*KN/ADeakyne, Knuth, et al., 1994gas phase; Entropy change calculated or estimated

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
9.4429.PHPMSDeakyne, Knuth, et al., 1994gas phase; Entropy change calculated or estimated

(NH4+ bullet 4Acetone) + Acetone = (NH4+ bullet 5Acetone)

By formula: (H4N+ bullet 4C3H6O) + C3H6O = (H4N+ bullet 5C3H6O)

Quantity Value Units Method Reference Comment
Deltar10.1kcal/molPHPMSMeot-Ner (Mautner), Sieck, et al., 1996gas phase; Entropy change calculated or estimated
Quantity Value Units Method Reference Comment
Deltar24.0cal/mol*KN/AMeot-Ner (Mautner), Sieck, et al., 1996gas phase; Entropy change calculated or estimated

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
4.5215.PHPMSMeot-Ner (Mautner), Sieck, et al., 1996gas phase; Entropy change calculated or estimated

NH4+ + 1-Propene, 2-methyl- = (NH4+ bullet 1-Propene, 2-methyl-)

By formula: H4N+ + C4H8 = (H4N+ bullet C4H8)

Quantity Value Units Method Reference Comment
Deltar35.0kcal/molPHPMSMeot-Ner (Mautner) and Sieck, 1991gas phase; condensation
Deltar34.9kcal/molPHPMSMeot-Ner (Mautner) and Sieck, 1990gas phase; forms t-C4H9NH3+
Quantity Value Units Method Reference Comment
Deltar37.1cal/mol*KPHPMSMeot-Ner (Mautner) and Sieck, 1991gas phase; condensation
Deltar39.2cal/mol*KPHPMSMeot-Ner (Mautner) and Sieck, 1990gas phase; forms t-C4H9NH3+

NH4+ + Benzene, 1,4-difluoro- = (NH4+ bullet Benzene, 1,4-difluoro-)

By formula: H4N+ + C6H4F2 = (H4N+ bullet C6H4F2)

Quantity Value Units Method Reference Comment
Deltar13.kcal/molPHPMSDeakyne and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated
Quantity Value Units Method Reference Comment
Deltar20.cal/mol*KN/ADeakyne and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
5.1395.PHPMSDeakyne and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated

NH4+ + Ethylene = (NH4+ bullet Ethylene)

By formula: H4N+ + C2H4 = (H4N+ bullet C2H4)

Quantity Value Units Method Reference Comment
Deltar10.kcal/molPHPMSDeakyne and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated
Quantity Value Units Method Reference Comment
Deltar20.cal/mol*KN/ADeakyne and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
3.7294.PHPMSDeakyne and Meot-Ner (Mautner), 1985gas phase; Entropy change calculated or estimated

(NH4+ bullet 4Water) + Water = (NH4+ bullet 5Water)

By formula: (H4N+ bullet 4H2O) + H2O = (H4N+ bullet 5H2O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar10.6kcal/molPHPMSMeot-Ner (Mautner), 1984gas phase
Deltar9.7kcal/molPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar27.0cal/mol*KPHPMSMeot-Ner (Mautner), 1984gas phase
Deltar22.4cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase

(NH4+ bullet 5Ammonia) + Ammonia = (NH4+ bullet 6Ammonia)

By formula: (H4N+ bullet 5H3N) + H3N = (H4N+ bullet 6H3N)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar6.5kcal/molPHPMSArshadi and Futrell, 1974gas phase
Deltar6.kcal/molMKERWei, Tzeng, et al., 1990gas phase; from graph
Quantity Value Units Method Reference Comment
Deltar21.9cal/mol*KPHPMSArshadi and Futrell, 1974gas phase

(NH4+ bullet 5Water) + Water = (NH4+ bullet 6Water)

By formula: (H4N+ bullet 5H2O) + H2O = (H4N+ bullet 6H2O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar9.1kcal/molPHPMSMeot-Ner (Mautner), 1984gas phase
Quantity Value Units Method Reference Comment
Deltar22.cal/mol*KPHPMSMeot-Ner (Mautner), 1984gas phase

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
3.2266.PHPMSMeot-Ner (Mautner), 1984gas phase

(NH4+ bullet 6Water) + Water = (NH4+ bullet 7Water)

By formula: (H4N+ bullet 6H2O) + H2O = (H4N+ bullet 7H2O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar8.4kcal/molPHPMSMeot-Ner (Mautner), 1984gas phase
Quantity Value Units Method Reference Comment
Deltar22.cal/mol*KPHPMSMeot-Ner (Mautner), 1984gas phase

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
2.8254.PHPMSMeot-Ner (Mautner), 1984gas phase

NH4+ + Hydrogen cyanide = (NH4+ bullet Hydrogen cyanide)

By formula: H4N+ + CHN = (H4N+ bullet CHN)

Quantity Value Units Method Reference Comment
Deltar21.9kcal/molPHPMSDeakyne, Knuth, et al., 1994gas phase
Deltar20.5kcal/molPHPMSSpeller and Meot-Ner (Mautner), 1985gas phase
Quantity Value Units Method Reference Comment
Deltar23.4cal/mol*KPHPMSDeakyne, Knuth, et al., 1994gas phase
Deltar20.2cal/mol*KPHPMSSpeller and Meot-Ner (Mautner), 1985gas phase

(NH4+ bullet 2Ammonia) + Hydrogen cyanide = (NH4+ bullet Hydrogen cyanide bullet 2Ammonia)

By formula: (H4N+ bullet 2H3N) + CHN = (H4N+ bullet CHN bullet 2H3N)

Quantity Value Units Method Reference Comment
Deltar13.4kcal/molPHPMSDeakyne, Knuth, et al., 1994gas phase; Entropy change calculated or estimated
Quantity Value Units Method Reference Comment
Deltar18.3cal/mol*KN/ADeakyne, Knuth, et al., 1994gas phase; Entropy change calculated or estimated

(NH4+ bullet Ammonia bullet 2Water) + Ammonia = (NH4+ bullet 2Ammonia bullet 2Water)

By formula: (H4N+ bullet H3N bullet 2H2O) + H3N = (H4N+ bullet 2H3N bullet 2H2O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar15.7kcal/molPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar33.9cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase

(NH4+ bullet Water bullet 2Ammonia) + Water = (NH4+ bullet 2Water bullet 2Ammonia)

By formula: (H4N+ bullet H2O bullet 2H3N) + H2O = (H4N+ bullet 2H2O bullet 2H3N)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar11.7kcal/molPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar27.8cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase

(NH4+ bullet 2Ammonia bullet Water) + Ammonia = (NH4+ bullet 3Ammonia bullet Water)

By formula: (H4N+ bullet 2H3N bullet H2O) + H3N = (H4N+ bullet 3H3N bullet H2O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar15.0kcal/molPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar34.3cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase

(NH4+ bullet 2Water bullet Ammonia) + Water = (NH4+ bullet 3Water bullet Ammonia)

By formula: (H4N+ bullet 2H2O bullet H3N) + H2O = (H4N+ bullet 3H2O bullet H3N)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar12.2kcal/molPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar28.5cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase

(NH4+ bullet Ammonia bullet Water) + Ammonia = (NH4+ bullet 2Ammonia bullet Water)

By formula: (H4N+ bullet H3N bullet H2O) + H3N = (H4N+ bullet 2H3N bullet H2O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar17.1kcal/molPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar31.8cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase

(NH4+ bullet Water bullet Ammonia) + Water = (NH4+ bullet 2Water bullet Ammonia)

By formula: (H4N+ bullet H2O bullet H3N) + H2O = (H4N+ bullet 2H2O bullet H3N)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar12.7kcal/molPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar25.0cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase

(NH4+ bullet 2Ammonia) + Water = (NH4+ bullet Water bullet 2Ammonia)

By formula: (H4N+ bullet 2H3N) + H2O = (H4N+ bullet H2O bullet 2H3N)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar12.4kcal/molPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar24.6cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase

(NH4+ bullet 2Water) + Ammonia = (NH4+ bullet Ammonia bullet 2Water)

By formula: (H4N+ bullet 2H2O) + H3N = (H4N+ bullet H3N bullet 2H2O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar18.2kcal/molPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar30.3cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase

(NH4+ bullet 3Ammonia) + Water = (NH4+ bullet Water bullet 3Ammonia)

By formula: (H4N+ bullet 3H3N) + H2O = (H4N+ bullet H2O bullet 3H3N)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar11.7kcal/molPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar27.9cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase

(NH4+ bullet 3Water) + Ammonia = (NH4+ bullet Ammonia bullet 3Water)

By formula: (H4N+ bullet 3H2O) + H3N = (H4N+ bullet H3N bullet 3H2O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar17.3kcal/molPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar35.1cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase

(NH4+ bullet 2Water bullet Sulfur dioxide) + Water = (NH4+ bullet 3Water bullet Sulfur dioxide)

By formula: (H4N+ bullet 2H2O bullet O2S) + H2O = (H4N+ bullet 3H2O bullet O2S)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar5.2kcal/molHPMSBanic and Iribarne, 1985gas phase; From thermochemical cycle,switching reaction, electric fields

(NH4+ bullet Ammonia) + Water = (NH4+ bullet Water bullet Ammonia)

By formula: (H4N+ bullet H3N) + H2O = (H4N+ bullet H2O bullet H3N)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar12.9kcal/molPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar20.3cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase

(NH4+ bullet Water bullet Sulfur dioxide) + Water = (NH4+ bullet 2Water bullet Sulfur dioxide)

By formula: (H4N+ bullet H2O bullet O2S) + H2O = (H4N+ bullet 2H2O bullet O2S)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar7.4kcal/molHPMSBanic and Iribarne, 1985gas phase; From thermochemical cycle,switching reaction, electric fields

(NH4+ bullet Water) + Ammonia = (NH4+ bullet Ammonia bullet Water)

By formula: (H4N+ bullet H2O) + H3N = (H4N+ bullet H3N bullet H2O)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar18.4kcal/molPHPMSPayzant, Cunningham, et al., 1973gas phase
Quantity Value Units Method Reference Comment
Deltar23.0cal/mol*KPHPMSPayzant, Cunningham, et al., 1973gas phase

(NH4+ bullet Ethane, 1,2-dimethoxy-) + Ammonia = (NH4+ bullet Ammonia bullet Ethane, 1,2-dimethoxy-)

By formula: (H4N+ bullet C4H10O2) + H3N = (H4N+ bullet H3N bullet C4H10O2)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar14.0kcal/molPHPMSMeot-Ner (Mautner), Sieck, et al., 1996gas phase
Quantity Value Units Method Reference Comment
Deltar19.4cal/mol*KPHPMSMeot-Ner (Mautner), Sieck, et al., 1996gas phase

NH4+ + Ethane, 1,2-dimethoxy- = (NH4+ bullet Ethane, 1,2-dimethoxy-)

By formula: H4N+ + C4H10O2 = (H4N+ bullet C4H10O2)

Quantity Value Units Method Reference Comment
Deltar38. ± 3.kcal/molPHPMSMeot-Ner (Mautner), Sieck, et al., 1996gas phase; possible ether decomposition
Quantity Value Units Method Reference Comment
Deltar36.cal/mol*KPHPMSMeot-Ner (Mautner), Sieck, et al., 1996gas phase; possible ether decomposition

NH4+ + Methane = (NH4+ bullet Methane)

By formula: H4N+ + CH4 = (H4N+ bullet CH4)

Quantity Value Units Method Reference Comment
Deltar3.6kcal/molHPMSBennet and Field, 1972gas phase; Entropy change is questionable
Quantity Value Units Method Reference Comment
Deltar15.5cal/mol*KHPMSBennet and Field, 1972gas phase; Entropy change is questionable

NH4+ + Hydrogen sulfide = (NH4+ bullet Hydrogen sulfide)

By formula: H4N+ + H2S = (H4N+ bullet H2S)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar11.4kcal/molPHPMSMeot-Ner (Mautner) and Sieck, 1985gas phase
Quantity Value Units Method Reference Comment
Deltar16.7cal/mol*KPHPMSMeot-Ner (Mautner) and Sieck, 1985gas phase

(NH4+ bullet 2Hydrogen cyanide bullet Ammonia) + Hydrogen cyanide = (NH4+ bullet 3Hydrogen cyanide bullet Ammonia)

By formula: (H4N+ bullet 2CHN bullet H3N) + CHN = (H4N+ bullet 3CHN bullet H3N)

Quantity Value Units Method Reference Comment
Deltar12.8kcal/molPHPMSDeakyne, Knuth, et al., 1994gas phase
Quantity Value Units Method Reference Comment
Deltar24.1cal/mol*KPHPMSDeakyne, Knuth, et al., 1994gas phase

(NH4+ bullet Hydrogen cyanide bullet Ammonia) + Hydrogen cyanide = (NH4+ bullet 2Hydrogen cyanide bullet Ammonia)

By formula: (H4N+ bullet CHN bullet H3N) + CHN = (H4N+ bullet 2CHN bullet H3N)

Quantity Value Units Method Reference Comment
Deltar12.2kcal/molPHPMSDeakyne, Knuth, et al., 1994gas phase
Quantity Value Units Method Reference Comment
Deltar19.4cal/mol*KPHPMSDeakyne, Knuth, et al., 1994gas phase

(NH4+ bullet 2Ammonia bullet Acetonitrile) + Ammonia = (NH4+ bullet 3Ammonia bullet Acetonitrile)

By formula: (H4N+ bullet 2H3N bullet C2H3N) + H3N = (H4N+ bullet 3H3N bullet C2H3N)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar13.6kcal/molMKERTzeng, Wei, et al., 1991gas phase; from graph

(NH4+ bullet 3Ammonia bullet Acetonitrile) + Ammonia = (NH4+ bullet 4Ammonia bullet Acetonitrile)

By formula: (H4N+ bullet 3H3N bullet C2H3N) + H3N = (H4N+ bullet 4H3N bullet C2H3N)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar7.4kcal/molMKERTzeng, Wei, et al., 1991gas phase; from graph

(NH4+ bullet 4Ammonia bullet Acetonitrile) + Ammonia = (NH4+ bullet 5Ammonia bullet Acetonitrile)

By formula: (H4N+ bullet 4H3N bullet C2H3N) + H3N = (H4N+ bullet 5H3N bullet C2H3N)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar6.9kcal/molMKERTzeng, Wei, et al., 1991gas phase; from graph

(NH4+ bullet 5Ammonia bullet Acetonitrile) + Ammonia = (NH4+ bullet 6Ammonia bullet Acetonitrile)

By formula: (H4N+ bullet 5H3N bullet C2H3N) + H3N = (H4N+ bullet 6H3N bullet C2H3N)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar6.0kcal/molMKERTzeng, Wei, et al., 1991gas phase; from graph

(NH4+ bullet 6Ammonia bullet Acetonitrile) + Ammonia = (NH4+ bullet 7Ammonia bullet Acetonitrile)

By formula: (H4N+ bullet 6H3N bullet C2H3N) + H3N = (H4N+ bullet 7H3N bullet C2H3N)

Bond type: Hydrogen bond (positive ion to hydride)

Quantity Value Units Method Reference Comment
Deltar5.5kcal/molMKERTzeng, Wei, et al., 1991gas phase; from graph

Vibrational and/or electronic energy levels

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: Marilyn E. Jacox

State:   X


Vib. 
sym. 
 No.   Approximate 
 type of mode 
 cm-1   Med.   Method   References

f2 3 NH stretch 3343.14 gas LD CC Crofton and Oka, 1983
Schaeffer, Begemann, et al., 1983
Schafer, Saykally, et al., 1984
Keim, Polak, et al., 1990
3 NH stretch 3343.1 H gas PF Dopfer, Nizkorodov, et al., 1996
Lakin, Olkhov, et al., 2001
3 NH stretch 3344.0 gas PF Lakin, Olkhov, et al., 2001
3 NH stretch 3335.8 A gas PF Bieske, Nizkorodov, et al., 1996
Dopfer, Nizkorodov, et al., 1997
Lakin, Dopfer, et al., 2000
Lakin, Dopfer, et al., 2000, 2
3 NH stretch 3357.5 Ne IR Jacox and Thompson, 2005
4 Deformation 1447.22 gas DL Polak, Gruebele, et al., 1989
Park, Xia, et al., 1996
4 Deformation 1442.5 Ne IR Jacox and Thompson, 2005

Additional references: Jacox, 1994, page 229; Jacox, 1998, page 266; Crofton and Oka, 1987; Signorell, Palm, et al., 1997

Notes

H(1/2)(2nu)
A0~1 cm-1 uncertainty

References

Go To: Top, Reaction thermochemistry data, Vibrational and/or electronic energy levels, Notes

Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.

Fehsenfeld and Ferguson, 1973
Fehsenfeld, F.C.; Ferguson, E.E., Thermal Energy Positive Ion Reactions in a Wet Atmosphere Containing Ammonia, J. Chem. Phys., 1973, 59, 12, 6272, https://doi.org/10.1063/1.1680006 . [all data]

Puckett and Teague, 1971
Puckett, L.J.; Teague, M.W., Ion-Molecule Reactions in NO - NH3 Gas Mixtures, J. Chem. Phys., 1971, 54, 11, 4860, https://doi.org/10.1063/1.1674763 . [all data]

Tang and Castleman, 1975
Tang, I.N.; Castleman, A.W., Gas - Phase Solvation of the Ammonium Ion in Ammonia, J. Chem. Phys., 1975, 62, 11, 4576, https://doi.org/10.1063/1.430331 . [all data]

Arshadi and Futrell, 1974
Arshadi, M.R.; Futrell, J.H., Studies in High - Pressure Mass Spectrometry. V. Thermodynamics of Solvation Reactions. NH4+ - NH3, J. Phys. Chem., 1974, 78, 15, 1482, https://doi.org/10.1021/j100608a008 . [all data]

Long and Franklin, 1973
Long, J.W.; Franklin, J.L., Ion-Cluster Reactions in a Drift Tube Ion Source, Int. J. Mass Spectrom. Ion Phys, 1973, 12, 5, 403, https://doi.org/10.1016/0020-7381(73)80025-7 . [all data]

Searles and Kebarle, 1968
Searles, S.K.; Kebarle, P., Ion-Solvent-Molecule Interactions in the Gas Phase. Enthalpies and Entropies for the Reactions NH4+(NH3)(n-1) + NH3 = NH4+(NH3)n, J. Phys. Chem., 1968, 72, 2, 742, https://doi.org/10.1021/j100848a061 . [all data]

Payzant, Cunningham, et al., 1973
Payzant, J.D.; Cunningham, A.J.; Kebarle, P., Gas - Phase Solvation of Ammonium Ion by NH3 and H2O and Stabilities of Mixed Clusters NH4+(NH3)n(H2O)w, Can. J. Chem., 1973, 51, 19, 3242, https://doi.org/10.1139/v73-485 . [all data]

Wincel, 1972
Wincel, H., Ion-Molecule Reactions in Ammonia at High Pressures, Int. J. Mass Spectrom. Ion Phys., 1972, 9, 3, 267, https://doi.org/10.1016/0020-7381(72)80053-6 . [all data]

Meot-Ner (Mautner) and Speller, 1986
Meot-Ner (Mautner), M.; Speller, C.V., The Filling of Solvent Shells in Cluster Ions: Thermochemical Criteria nd the Effects of Isomeric Clusters, J. Phys. Chem., 1986, 90, 25, 6616, https://doi.org/10.1021/j100283a006 . [all data]

Meot-Ner (Mautner), 1984
Meot-Ner (Mautner), M., The Ionic Hydrogen Bond and Ion Solvation. 2. Hydration of Onium Ions by 1 - 7 H2O Molecules. Relations Between Monomolecular, Specific and Bulk Hydration, J. Am. Chem. Soc., 1984, 106, 5, 1265, https://doi.org/10.1021/ja00317a016 . [all data]

Banic and Iribarne, 1985
Banic, C.M.; Iribarne, J.V., Equilibrium Constants for Clustering of Neutral Molecules about Gaseous Ions, J. Chem. Phys., 1985, 83, 12, 6432, https://doi.org/10.1063/1.449543 . [all data]

Wei, Tzeng, et al., 1990
Wei, S.; Tzeng, W.B.; Castleman, A.W., Kinetic Energy Release Measurements of Ammonia Cluster Ions During Metastable Decomposition and Determination of Cluster Ion Binding Energies, J. Chem. Phys., 1990, 92, 1, 332, https://doi.org/10.1063/1.458434 . [all data]

Kamke, Herrmann, et al., 1988
Kamke, W.; Herrmann, R.; Wang, Z.; Hertel, I.V., On the Photoionization and Fragmentation of Ammonia Clusters using TPEPICO, Z. Phys. D., 1988, 10, 4, 491, https://doi.org/10.1007/BF01425768 . [all data]

Hogg, Haynes, et al., 1966
Hogg, A.M.; Haynes, R.M.; Kebarle, P., Ion-Solvent Molecule Interactions Studied in the Gas Phase. Heats and Entropies of Individual Steps. NH4+.(n-1)NH3 = NH4+.nNH3, J. Am. Chem. Soc., 1966, 88, 1, 28, https://doi.org/10.1021/ja00953a006 . [all data]

Deakyne, Knuth, et al., 1994
Deakyne, C.A.; Knuth, D.M.; Speller, C.V.; Meot-Ner (Mautner), M.; Sieck, L.W., Filling of Solvent Shells about Ions. Part 3. Isomeric Clusters of (HCN)n(NH3)mH+, J. Mol. Structure (Theochem), 1994, 307, 217, https://doi.org/10.1016/0166-1280(94)80130-4 . [all data]

Speller and Meot-Ner (Mautner), 1985
Speller, C.V.; Meot-Ner (Mautner), M., The Ionic Hydrogen Bond and Ion Solvation. 3. Bonds Involving Cyanides. Correlations with Proton Affinites, J. Phys. Chem., 1985, 81, 24, 5217, https://doi.org/10.1021/j100270a020 . [all data]

Deakyne and Meot-Ner (Mautner), 1985
Deakyne, C.A.; Meot-Ner (Mautner), M., Unconventional Ionic Hydrogen Bonds. 2. NH+ pi. Complexes of Onium Ions with Olefins and Benzene Derivatives, J. Am. Chem. Soc., 1985, 107, 2, 474, https://doi.org/10.1021/ja00288a034 . [all data]

Meot-Ner (Mautner), Sieck, et al., 1996
Meot-Ner (Mautner), M.; Sieck, L.W.; Liebman, J.F.; Scheiner, S., Complexing of the Ammonium Ion by Polyethers. Comparative Complexing Thermochemistry of Ammonium, Hydronium, and Alkali Cations, J. Phys. Chem., 1996, 100, 16, 6445, https://doi.org/10.1021/jp9514943 . [all data]

Meot-Ner (Mautner) and Sieck, 1991
Meot-Ner (Mautner), M.; Sieck, L.W., Proton affinity ladders from variable-temperature equilibrium measurements. 1. A reevaluation of the upper proton affinity range, J. Am. Chem. Soc., 1991, 113, 12, 4448, https://doi.org/10.1021/ja00012a012 . [all data]

Meot-Ner (Mautner) and Sieck, 1990
Meot-Ner (Mautner), M.; Sieck, L.W., Ion Thermochemistry at High Temperatures. 1. Thermochemistry of the Ammonium Ion from Variable - Temperature Equilibrium Measurements. Proton Transfer, Association, and Decomposition Reactions in Ammonia, Isobutene, and t-Butylamine, J. Phys. Chem., 1990, 94, 19, 7730, https://doi.org/10.1021/j100382a076 . [all data]

Bennet and Field, 1972
Bennet, S.L.; Field, F.H., Reversible Reactions of Gaseous Ions. VI. The NH3 - CH4, H2S - CH4 and CF4 - CH4 Systems at Low Temperatures, J. Am. Chem. Soc., 1972, 94, 18, 6305, https://doi.org/10.1021/ja00773a009 . [all data]

Meot-Ner (Mautner) and Sieck, 1985
Meot-Ner (Mautner), M.; Sieck, L.W., The Ionic Hydrogen Bond and Ion Solvation. 4. SH+ O and NH+ S Bonds. Correlations with Proton Affinity. Mutual Effects of Weak and Strong Ligands in Mixed Clusters, J. Phys. Chem., 1985, 89, 24, 5222, https://doi.org/10.1021/j100270a021 . [all data]

Tzeng, Wei, et al., 1991
Tzeng, W.B.; Wei, S.; Castleman, A.W., Stability, Structure and Binding - Energies of Solvated Cluster Ions - Ammonia Acetonitrile and Ammonia Acetaldehyde Systems, J. Phys. Chem., 1991, 95, 15, 5757, https://doi.org/10.1021/j100168a011 . [all data]

Crofton and Oka, 1983
Crofton, M.; Oka, T., Infrared studies of molecular ions. I. The «nu»3 band of NH4+, J. Chem. Phys., 1983, 79, 6, 3157, https://doi.org/10.1063/1.446147 . [all data]

Schaeffer, Begemann, et al., 1983
Schaeffer, E.; Begemann, M.H.; Gudeman, C.S.; Saykally, R.J., The «nu»3 vibrational spectrum of the free ammonium ion (NH4+), J. Chem. Phys., 1983, 79, 6, 3159, https://doi.org/10.1063/1.446148 . [all data]

Schafer, Saykally, et al., 1984
Schafer, E.; Saykally, R.J.; Robiette, A.G., A high resolution study of the «nu»3 band of the ammonium ion (NH+4) by velocity modulation laser absorption spectroscopy, J. Chem. Phys., 1984, 80, 9, 3969, https://doi.org/10.1063/1.447279 . [all data]

Keim, Polak, et al., 1990
Keim, E.R.; Polak, M.L.; Owrutsky, J.C.; Coe, J.V.; Saykally, R.J., Absolute infrared vibrational band intensities of molecular ions determined by direct laser absorption spectroscopy in fast ion beams, J. Chem. Phys., 1990, 93, 5, 3111, https://doi.org/10.1063/1.458845 . [all data]

Dopfer, Nizkorodov, et al., 1996
Dopfer, O.; Nizkorodov, S.A.; Meuwly, M.; Bieske, E.J.; Maier, J.P., The «nu»3 infrared spectrum of the He«58872»NH4+ complex, Chem. Phys. Lett., 1996, 260, 5-6, 545, https://doi.org/10.1016/0009-2614(96)00919-0 . [all data]

Lakin, Olkhov, et al., 2001
Lakin, N.M.; Olkhov, R.V.; Dopfer, O., Internal rotation in NH4+--Rg dimers (Rg=He, Ne, Ar): Potential energy surfaces and IR spectra of the «nu»3 band, Faraday Discuss., 2001, 118, 455, https://doi.org/10.1039/b010232f . [all data]

Bieske, Nizkorodov, et al., 1996
Bieske, E.J.; Nizkorodov, S.A.; Dopfer, O.; Maier, J.P.; Stickland, R.J.; Cotterell, B.J.; Howard, B.J., Observation of the infrared spectrum of the «nu»3 band of the argon-ammonium ionic complex, Chem. Phys. Lett., 1996, 250, 3-4, 266, https://doi.org/10.1016/0009-2614(96)00029-2 . [all data]

Dopfer, Nizkorodov, et al., 1997
Dopfer, O.; Nizkorodov, S.A.; Meuwly, M.; Bieske, E.J.; Maier, J.P., Microsolvation of the ammonium ion in argon: infrared spectra of NH4+«58872»Arn complexes (n = 1--7), Int. J. Mass Spectrom. Ion Proc., 1997, 167/168, 637, https://doi.org/10.1016/S0168-1176(97)00111-0 . [all data]

Lakin, Dopfer, et al., 2000
Lakin, N.M.; Dopfer, O.; Meuwly, M.; Howard, B.J.; Maier, J.P., The intermolecular potential of NH, Mol. Phys., 2000, 98, 2, 63, https://doi.org/10.1080/00268970009483270 . [all data]

Lakin, Dopfer, et al., 2000, 2
Lakin, N.M.; Dopfer, O.; Howard, B.J.; Maier, J.P., The inter molecular potential of NH, Mol. Phys., 2000, 98, 2, 81, https://doi.org/10.1080/00268970009483271 . [all data]

Jacox and Thompson, 2005
Jacox, M.E.; Thompson, W.E., Infrared spectrum of the NH4-dn+ cation trapped in solid neon, Phys. Chem. Chem. Phys., 2005, 7, 5, 768, https://doi.org/10.1039/b414641g . [all data]

Polak, Gruebele, et al., 1989
Polak, M.; Gruebele, M.; DeKock, B.W.; Saykally, R.J., Velocity modulation infrared laser spectroscopy of molecular ions, Mol. Phys., 1989, 66, 6, 1193, https://doi.org/10.1080/00268978900100801 . [all data]

Park, Xia, et al., 1996
Park, J.; Xia, C.; Selby, S.; Foster, S.C., The «nu»4Band of Ammonium, NH+4, J. Mol. Spectrosc., 1996, 179, 1, 150, https://doi.org/10.1006/jmsp.1996.0193 . [all data]

Jacox, 1994
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules, American Chemical Society, Washington, DC, 1994, 464. [all data]

Jacox, 1998
Jacox, M.E., Vibrational and electronic energy levels of polyatomic transient molecules: supplement A, J. Phys. Chem. Ref. Data, 1998, 27, 2, 115-393, https://doi.org/10.1063/1.556017 . [all data]

Crofton and Oka, 1987
Crofton, M.W.; Oka, T., Observation of forbidden transitions of ammonium ion (NH+4) «nu»3 band and determination of ground state rotational constants. Observation of «nu»3 band allowed transitions of ND+4, J. Chem. Phys., 1987, 86, 11, 5983, https://doi.org/10.1063/1.452484 . [all data]

Signorell, Palm, et al., 1997
Signorell, R.; Palm, H.; Merkt, F., Structure of the ammonium radical from a rotationally resolved photoelectron spectrum, J. Chem. Phys., 1997, 106, 16, 6523, https://doi.org/10.1063/1.473653 . [all data]


Notes

Go To: Top, Reaction thermochemistry data, Vibrational and/or electronic energy levels, References