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Methylamine

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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, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Vibrational and/or electronic energy levels, Gas Chromatography, NIST Free Links, 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: Donald R. Burgess, Jr.

Quantity Value Units Method Reference Comment
Deltafgas-5.62kcal/molN/AAston, Siller, et al., 1937Value computed using «DELTA»fHliquid° value of -47.3±0.46 kj/mol from Aston, Siller, et al., 1937 and «DELTA»vapH° value of 23.85 kj/mol from missing citation.
Deltafgas-2.92kcal/molN/ALemoult, 1907Value computed using «DELTA»fHliquid° value of -36 kj/mol from Lemoult, 1907 and «DELTA»vapH° value of 23.85 kj/mol from missing citation.

Condensed phase thermochemistry data

Go To: Top, Gas phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Vibrational and/or electronic energy levels, Gas Chromatography, NIST Free Links, 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DH - Eugene S. Domalski and Elizabeth D. Hearing

Quantity Value Units Method Reference Comment
Deltafliquid-11.3 ± 0.11kcal/molN/ACox and Pilcher, 1970Review; Unpublished work J. Jaffe; ALS
Deltafliquid-11.3 ± 0.11kcal/molCcbAston, Siller, et al., 1937Unpublished work J. Jaffe; ALS
Deltafliquid-8.7kcal/molCcbLemoult, 1907ALS
Quantity Value Units Method Reference Comment
Deltacliquid-253.54 ± 0.09kcal/molN/ACox and Pilcher, 1970Review; Unpublished work J. Jaffe; ALS
Deltacliquid-253.54 ± 0.09kcal/molCcbAston, Siller, et al., 1937Unpublished work J. Jaffe; ALS
Deltacliquid-261.4kcal/molCcbMuller, 1910At 288 K; ALS
Deltacliquid-256.9kcal/molCcbLemoult, 1907ALS
Quantity Value Units Method Reference Comment
liquid35.90cal/mol*KN/AAston, Siller, et al., 1937, 2For superheated liquid, using extrapolated heat capacities.; DH

Constant pressure heat capacity of liquid

Cp,liquid (cal/mol*K) Temperature (K) Reference Comment
24.331259.28Aston, Siller, et al., 1937, 2T = 14 to 259 K. Value is unsmoothed experimental datum.; DH

Phase change data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Vibrational and/or electronic energy levels, Gas Chromatography, NIST Free Links, 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
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

Quantity Value Units Method Reference Comment
Tboil266.8 ± 0.3KAVGN/AAverage of 8 values; Individual data points
Quantity Value Units Method Reference Comment
Tfus180.05KN/ARoberts, Emeleus, et al., 1939Uncertainty assigned by TRC = 0.4 K; TRC
Tfus180.05KN/AEmeleus and Briscoe, 1937Uncertainty assigned by TRC = 0.3 K; TRC
Tfus179.7KN/AMcNeight and Smyth, 1936Uncertainty assigned by TRC = 0.07 K; TRC
Quantity Value Units Method Reference Comment
Ttriple179.7KN/AAston, Siller, et al., 1937, 3Uncertainty assigned by TRC = 0.07 K; T0/K=273.16; TRC
Quantity Value Units Method Reference Comment
Tc430.85KN/ALi and Kiran, 1988Uncertainty assigned by TRC = 0.5 K; TRC
Tc430.7KN/AKay and Young, 1974Uncertainty assigned by TRC = 0.2 K; TRC
Tc430.05KN/ABerthoud, 1917Uncertainty assigned by TRC = 0.7 K; TRC
Quantity Value Units Method Reference Comment
Pc75.50atmN/ALi and Kiran, 1988Uncertainty assigned by TRC = 0.987 atm; TRC
Pc75.14atmN/AKay and Young, 1974Uncertainty assigned by TRC = 0.04 atm; TRC
Pc73.6000atmN/ABerthoud, 1917Uncertainty assigned by TRC = 0.6000 atm; TRC
Quantity Value Units Method Reference Comment
Vc0.1385l/molN/ALi and Kiran, 1988Uncertainty assigned by TRC = 0.001 l/mol; TRC
Quantity Value Units Method Reference Comment
Deltavap5.700kcal/molN/AMajer and Svoboda, 1985 

Enthalpy of vaporization

DeltavapH (kcal/mol) Temperature (K) Method Reference Comment
6.1690266.84N/AAston, Siller, et al., 1937, 2DH
6.12266.8N/AMajer and Svoboda, 1985 
5.93334.AStephenson and Malanowski, 1987Based on data from 319. - 381. K.; AC
5.62388.AStephenson and Malanowski, 1987Based on data from 373. - 430. K.; AC
6.24278.AStephenson and Malanowski, 1987Based on data from 263. - 329. K.; AC
6.50258.AStephenson and Malanowski, 1987Based on data from 223. - 273. K. See also Dykyj, 1970.; AC
6.169 ± 0.030266.84VAston, Siller, et al., 1937ALS
6.55252.N/AAston, Siller, et al., 1937, 2Based on data from 190. - 267. K. See also Boublik, Fried, et al., 1984.; AC

Entropy of vaporization

DeltavapS (cal/mol*K) Temperature (K) Reference Comment
23.12266.84Aston, Siller, et al., 1937, 2DH

Antoine Equation Parameters

log10(P) = A − (B / (T + C))
    P = vapor pressure (atm)
    T = temperature (K)

View plot Requires a JavaScript / HTML 5 canvas capable browser.

Temperature (K) A B C Reference Comment
190.06 - 266.924.5141034.977-37.574Aston, Siller, et al., 1937, 2Coefficents calculated by NIST from author's data.

Enthalpy of fusion

DeltafusH (kcal/mol) Temperature (K) Reference Comment
1.466179.70Aston, Siller, et al., 1937, 2DH
1.47179.7Domalski and Hearing, 1996AC

Entropy of fusion

DeltafusS (cal/mol*K) Temperature (K) Reference Comment
8.157179.70Aston, Siller, et al., 1937, 2DH

In addition to the Thermodynamics Research Center (TRC) data available from this site, much more physical and chemical property data is available from the following TRC products:


Reaction thermochemistry data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Henry's Law data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Vibrational and/or electronic energy levels, Gas Chromatography, NIST Free Links, 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:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar
B - John E. Bartmess
MS - José A. Martinho Simões
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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.

Individual Reactions

Lithium ion (1+) + Methylamine = (Lithium ion (1+) bullet Methylamine)

By formula: Li+ + CH5N = (Li+ bullet CH5N)

Quantity Value Units Method Reference Comment
Deltar41.1kcal/molICRWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M
Quantity Value Units Method Reference Comment
Deltar26.cal/mol*KN/AWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M
Quantity Value Units Method Reference Comment
Deltar33.3kcal/molICRWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M

C3H9Sn+ + Methylamine = (C3H9Sn+ bullet Methylamine)

By formula: C3H9Sn+ + CH5N = (C3H9Sn+ bullet CH5N)

Quantity Value Units Method Reference Comment
Deltar42.1kcal/molPHPMSStone and Splinter, 1984gas phase; switching reaction((CH3)3Sn+)CH3OH, Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Deltar30.7cal/mol*KN/AStone and Splinter, 1984gas phase; switching reaction((CH3)3Sn+)CH3OH, Entropy change calculated or estimated; M

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
26.0525.PHPMSStone and Splinter, 1984gas phase; switching reaction((CH3)3Sn+)CH3OH, Entropy change calculated or estimated; M

Potassium ion (1+) + Methylamine = (Potassium ion (1+) bullet Methylamine)

By formula: K+ + CH5N = (K+ bullet CH5N)

Quantity Value Units Method Reference Comment
Deltar19.1kcal/molHPMSDavidson and Kebarle, 1976gas phase; switching reaction(K+)H2O; Davidson and Kebarle, 1976, 2; M
Quantity Value Units Method Reference Comment
Deltar21.8cal/mol*KHPMSDavidson and Kebarle, 1976gas phase; switching reaction(K+)H2O; Davidson and Kebarle, 1976, 2; M
Quantity Value Units Method Reference Comment
Deltar12.7kcal/molHPMSDavidson and Kebarle, 1976gas phase; switching reaction(K+)H2O; Davidson and Kebarle, 1976, 2; M

Sodium ion (1+) + Methylamine = (Sodium ion (1+) bullet Methylamine)

By formula: Na+ + CH5N = (Na+ bullet CH5N)

Quantity Value Units Method Reference Comment
Deltar26.3 ± 0.2kcal/molHPMSHoyau, Norrman, et al., 1999RCD
Deltar32.1kcal/molHPMSGuo and Castleman, 1990gas phase; M
Quantity Value Units Method Reference Comment
Deltar22600.cal/mol*KHPMSHoyau, Norrman, et al., 1999RCD
Deltar30.3cal/mol*KHPMSGuo and Castleman, 1990gas phase; M

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
19.5298.IMREMcMahon and Ohanessian, 2000Anchor alanine=39.89; RCD

(CH6N+ bullet 2Methylamine) + Methylamine = (CH6N+ bullet 3Methylamine)

By formula: (CH6N+ bullet 2CH5N) + CH5N = (CH6N+ bullet 3CH5N)

Quantity Value Units Method Reference Comment
Deltar13.4kcal/molPHPMSMeot-Ner (Mautner), 1992gas phase; M
Deltar17.0kcal/molHPMSHolland and Castleman, 1982gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Deltar25.1cal/mol*KPHPMSMeot-Ner (Mautner), 1992gas phase; M
Deltar41.6cal/mol*KHPMSHolland and Castleman, 1982gas phase; Entropy change is questionable; M

(CH6N+ bullet Methylamine) + Methylamine = (CH6N+ bullet 2Methylamine)

By formula: (CH6N+ bullet CH5N) + CH5N = (CH6N+ bullet 2CH5N)

Quantity Value Units Method Reference Comment
Deltar16.0kcal/molPHPMSMeot-Ner (Mautner), 1992gas phase; M
Deltar19.2kcal/molHPMSHolland and Castleman, 1982gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Deltar22.9cal/mol*KPHPMSMeot-Ner (Mautner), 1992gas phase; M
Deltar39.9cal/mol*KHPMSHolland and Castleman, 1982gas phase; Entropy change is questionable; M

CH4N- + Hydrogen cation = Methylamine

By formula: CH4N- + H+ = CH5N

Quantity Value Units Method Reference Comment
Deltar402.0 ± 2.6kcal/molD-EARadisic, Xu, et al., 2002gas phase; B
Deltar403.21 ± 0.82kcal/molG+TSMacKay, Hemsworth, et al., 1976gas phase; B
Quantity Value Units Method Reference Comment
Deltar394.5 ± 2.7kcal/molH-TSRadisic, Xu, et al., 2002gas phase; B
Deltar395.70 ± 0.70kcal/molIMREMacKay, Hemsworth, et al., 1976gas phase; B

C3H9Si+ + Methylamine = (C3H9Si+ bullet Methylamine)

By formula: C3H9Si+ + CH5N = (C3H9Si+ bullet CH5N)

Quantity Value Units Method Reference Comment
Deltar55.4kcal/molPHPMSLi and Stone, 1990gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)C6H5COOC2H5; Wojtyniak and Stone, 1986; M
Quantity Value Units Method Reference Comment
Deltar38.1cal/mol*KPHPMSLi and Stone, 1990gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)C6H5COOC2H5; Wojtyniak and Stone, 1986; M

CH6N+ + Methylamine = (CH6N+ bullet Methylamine)

By formula: CH6N+ + CH5N = (CH6N+ bullet CH5N)

Quantity Value Units Method Reference Comment
Deltar25.4kcal/molPHPMSMeot-Ner (Mautner), 1992gas phase; M
Deltar21.7kcal/molPHPMSYamdagni and Kebarle, 1973gas phase; M
Quantity Value Units Method Reference Comment
Deltar27.3cal/mol*KPHPMSMeot-Ner (Mautner), 1992gas phase; M
Deltar23.6cal/mol*KPHPMSYamdagni and Kebarle, 1973gas phase; M

C6H12NO3+ + Methylamine = (C6H12NO3+ bullet Methylamine)

By formula: C6H12NO3+ + CH5N = (C6H12NO3+ bullet CH5N)

Bond type: Hydrogen bonds with polydentate bonding in positive ions

Quantity Value Units Method Reference Comment
Deltar28.6kcal/molPHPMSMeot-Ner, 1984gas phase; M
Quantity Value Units Method Reference Comment
Deltar19.9cal/mol*KPHPMSMeot-Ner, 1984gas phase; M

(Lead ion (1+) bullet Methylamine) + Methylamine = (Lead ion (1+) bullet 2Methylamine)

By formula: (Pb+ bullet CH5N) + CH5N = (Pb+ bullet 2CH5N)

Quantity Value Units Method Reference Comment
Deltar19.1 ± 0.2kcal/molHPMSGuo and Castleman, 1990gas phase; M
Quantity Value Units Method Reference Comment
Deltar19.5cal/mol*KHPMSGuo and Castleman, 1990gas phase; M

Lead ion (1+) + Methylamine = (Lead ion (1+) bullet Methylamine)

By formula: Pb+ + CH5N = (Pb+ bullet CH5N)

Quantity Value Units Method Reference Comment
Deltar35.4 ± 0.3kcal/molHPMSGuo and Castleman, 1990gas phase; M
Quantity Value Units Method Reference Comment
Deltar30.0cal/mol*KHPMSGuo and Castleman, 1990gas phase; M

(CH6N+ bullet 3Methylamine) + Methylamine = (CH6N+ bullet 4Methylamine)

By formula: (CH6N+ bullet 3CH5N) + CH5N = (CH6N+ bullet 4CH5N)

Quantity Value Units Method Reference Comment
Deltar7.8kcal/molPHPMSMeot-Ner (Mautner), 1992gas phase; M
Quantity Value Units Method Reference Comment
Deltar21.5cal/mol*KPHPMSMeot-Ner (Mautner), 1992gas phase; M

C2H8N+ + Methylamine = (C2H8N+ bullet Methylamine)

By formula: C2H8N+ + CH5N = (C2H8N+ bullet CH5N)

Quantity Value Units Method Reference Comment
Deltar22.4kcal/molPHPMSYamdagni and Kebarle, 1973gas phase; M
Quantity Value Units Method Reference Comment
Deltar29.2cal/mol*KPHPMSYamdagni and Kebarle, 1973gas phase; M

C5H11BrMg (solution) + Methylamine (solution) = CH4BrMgN (solution) + Pentane (solution)

By formula: C5H11BrMg (solution) + CH5N (solution) = CH4BrMgN (solution) + C5H12 (solution)

Quantity Value Units Method Reference Comment
Deltar-31.19 ± 0.60kcal/molRSCHolm, 1983solvent: Diethyl ether; MS

2Methylamine = Dimethylamine + Ammonia

By formula: 2CH5N = C2H7N + H3N

Quantity Value Units Method Reference Comment
Deltar-4.70kcal/molEqkIssoire and Long, 1960gas phase; ALS

2Ethylamine = Methylamine + Methylamine, N,N-dimethyl-

By formula: 2C2H7N = CH5N + C3H9N

Quantity Value Units Method Reference Comment
Deltar-3.15kcal/molEqkIssoire and Long, 1960gas phase; ALS

Henry's Law data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Vibrational and/or electronic energy levels, Gas Chromatography, NIST Free Links, 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) = H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 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)

H (mol/kg*bar) d(ln(kH))/d(1/T) (K) Method Reference Comment
140. QN/A missing citation gives missing citation as the source for the data. However, no data was found in that reference.
36.2600.LN/A 
89. MN/A 

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Vibrational and/or electronic energy levels, Gas Chromatography, NIST Free Links, References, Notes

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

Data evaluated as indicated in comments:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias

Data compiled as indicated in comments:
B - John E. Bartmess
LBLHLM - Sharon G. Lias, John E. Bartmess, Joel F. Liebman, John L. Holmes, Rhoda D. Levin, and W. Gary Mallard
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron

View reactions leading to CH5N+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)8.9 ± 0.1eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)214.9kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity206.6kcal/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
8.9PEAue and Bowers, 1979LLK
9.45EIBaldwin, Loudon, et al., 1977LLK
8.9 ± 0.1PEAue, Webb, et al., 1976LLK
9.08PEVovna and Vilesov, 1974LLK
8.80 ± 0.02PEMaier and Turner, 1973LLK
9.65PEElbel, Dieck, et al., 1982Vertical value; LBLHLM
9.0PEBieri, Asbrink, et al., 1982Vertical value; LBLHLM
9.58PEUtsunomiya, Kobayashi, et al., 1980Vertical value; LLK
9.58PEKobayashi, 1978Vertical value; LLK
9.64PEKimura and Osafune, 1975Vertical value; LLK
9.64PEKatsumata, Iwai, et al., 1973Vertical value; LLK
9.65PEOgata, Onizuka, et al., 1972Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
CH2N+15.2 ± 0.3H2+HEICollin and Franskin, 1966RDSH
CH2N+[CNH2+]14.0 ± 0.4?EIBurgers, Holmes, et al., 1984LBLHLM
CH3+14.5NH2EISenSharma and Franklin, 1973LLK
CH3+14.7NH2EIHaney and Franklin, 1968RDSH
CH3N+13.3 ± 0.2H2EICollin and Franskin, 1966RDSH
CH4N+10.18HEILossing, Lam, et al., 1981LLK
CH4N+10.70HEILoudon and Webb, 1977LLK
CH4N+10.55HEILoudon and Webb, 1977LLK
CH4N+10.82 ± 0.15HEICollin and Franskin, 1966RDSH
CH4N+10.3 ± 0.1HEITaft, Martin, et al., 1965RDSH
CH5N+8.99?PICornford, Frost, et al., 1971LLK
CH5N+9.29?CTSSlifkin and Allison, 1967RDSH
CH5N+9.36 ± 0.02?EICollin and Franskin, 1966RDSH
CH5N+8.97 ± 0.02?PIWatanabe and Mottl, 1957RDSH
H2N+15.9CH3EISenSharma and Franklin, 1973LLK
NH2+15.7CH3EIHaney and Franklin, 1968RDSH

De-protonation reactions

CH4N- + Hydrogen cation = Methylamine

By formula: CH4N- + H+ = CH5N

Quantity Value Units Method Reference Comment
Deltar402.0 ± 2.6kcal/molD-EARadisic, Xu, et al., 2002gas phase; B
Deltar403.21 ± 0.82kcal/molG+TSMacKay, Hemsworth, et al., 1976gas phase; B
Quantity Value Units Method Reference Comment
Deltar394.5 ± 2.7kcal/molH-TSRadisic, Xu, et al., 2002gas phase; B
Deltar395.70 ± 0.70kcal/molIMREMacKay, Hemsworth, et al., 1976gas phase; B

Ion clustering data

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Vibrational and/or electronic energy levels, Gas Chromatography, NIST Free Links, 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:
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
RCD - Robert C. Dunbar

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

CH6N+ + Methylamine = (CH6N+ bullet Methylamine)

By formula: CH6N+ + CH5N = (CH6N+ bullet CH5N)

Quantity Value Units Method Reference Comment
Deltar25.4kcal/molPHPMSMeot-Ner (Mautner), 1992gas phase; M
Deltar21.7kcal/molPHPMSYamdagni and Kebarle, 1973gas phase; M
Quantity Value Units Method Reference Comment
Deltar27.3cal/mol*KPHPMSMeot-Ner (Mautner), 1992gas phase; M
Deltar23.6cal/mol*KPHPMSYamdagni and Kebarle, 1973gas phase; M

(CH6N+ bullet Methylamine) + Methylamine = (CH6N+ bullet 2Methylamine)

By formula: (CH6N+ bullet CH5N) + CH5N = (CH6N+ bullet 2CH5N)

Quantity Value Units Method Reference Comment
Deltar16.0kcal/molPHPMSMeot-Ner (Mautner), 1992gas phase; M
Deltar19.2kcal/molHPMSHolland and Castleman, 1982gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Deltar22.9cal/mol*KPHPMSMeot-Ner (Mautner), 1992gas phase; M
Deltar39.9cal/mol*KHPMSHolland and Castleman, 1982gas phase; Entropy change is questionable; M

(CH6N+ bullet 2Methylamine) + Methylamine = (CH6N+ bullet 3Methylamine)

By formula: (CH6N+ bullet 2CH5N) + CH5N = (CH6N+ bullet 3CH5N)

Quantity Value Units Method Reference Comment
Deltar13.4kcal/molPHPMSMeot-Ner (Mautner), 1992gas phase; M
Deltar17.0kcal/molHPMSHolland and Castleman, 1982gas phase; Entropy change is questionable; M
Quantity Value Units Method Reference Comment
Deltar25.1cal/mol*KPHPMSMeot-Ner (Mautner), 1992gas phase; M
Deltar41.6cal/mol*KHPMSHolland and Castleman, 1982gas phase; Entropy change is questionable; M

(CH6N+ bullet 3Methylamine) + Methylamine = (CH6N+ bullet 4Methylamine)

By formula: (CH6N+ bullet 3CH5N) + CH5N = (CH6N+ bullet 4CH5N)

Quantity Value Units Method Reference Comment
Deltar7.8kcal/molPHPMSMeot-Ner (Mautner), 1992gas phase; M
Quantity Value Units Method Reference Comment
Deltar21.5cal/mol*KPHPMSMeot-Ner (Mautner), 1992gas phase; M

C2H8N+ + Methylamine = (C2H8N+ bullet Methylamine)

By formula: C2H8N+ + CH5N = (C2H8N+ bullet CH5N)

Quantity Value Units Method Reference Comment
Deltar22.4kcal/molPHPMSYamdagni and Kebarle, 1973gas phase; M
Quantity Value Units Method Reference Comment
Deltar29.2cal/mol*KPHPMSYamdagni and Kebarle, 1973gas phase; M

C3H9Si+ + Methylamine = (C3H9Si+ bullet Methylamine)

By formula: C3H9Si+ + CH5N = (C3H9Si+ bullet CH5N)

Quantity Value Units Method Reference Comment
Deltar55.4kcal/molPHPMSLi and Stone, 1990gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)C6H5COOC2H5; Wojtyniak and Stone, 1986; M
Quantity Value Units Method Reference Comment
Deltar38.1cal/mol*KPHPMSLi and Stone, 1990gas phase; switching reaction,Thermochemical ladder((CH3)3Si+)C6H5COOC2H5; Wojtyniak and Stone, 1986; M

C3H9Sn+ + Methylamine = (C3H9Sn+ bullet Methylamine)

By formula: C3H9Sn+ + CH5N = (C3H9Sn+ bullet CH5N)

Quantity Value Units Method Reference Comment
Deltar42.1kcal/molPHPMSStone and Splinter, 1984gas phase; switching reaction((CH3)3Sn+)CH3OH, Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Deltar30.7cal/mol*KN/AStone and Splinter, 1984gas phase; switching reaction((CH3)3Sn+)CH3OH, Entropy change calculated or estimated; M

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
26.0525.PHPMSStone and Splinter, 1984gas phase; switching reaction((CH3)3Sn+)CH3OH, Entropy change calculated or estimated; M

C6H12NO3+ + Methylamine = (C6H12NO3+ bullet Methylamine)

By formula: C6H12NO3+ + CH5N = (C6H12NO3+ bullet CH5N)

Bond type: Hydrogen bonds with polydentate bonding in positive ions

Quantity Value Units Method Reference Comment
Deltar28.6kcal/molPHPMSMeot-Ner, 1984gas phase; M
Quantity Value Units Method Reference Comment
Deltar19.9cal/mol*KPHPMSMeot-Ner, 1984gas phase; M

Potassium ion (1+) + Methylamine = (Potassium ion (1+) bullet Methylamine)

By formula: K+ + CH5N = (K+ bullet CH5N)

Quantity Value Units Method Reference Comment
Deltar19.1kcal/molHPMSDavidson and Kebarle, 1976gas phase; switching reaction(K+)H2O; Davidson and Kebarle, 1976, 2; M
Quantity Value Units Method Reference Comment
Deltar21.8cal/mol*KHPMSDavidson and Kebarle, 1976gas phase; switching reaction(K+)H2O; Davidson and Kebarle, 1976, 2; M
Quantity Value Units Method Reference Comment
Deltar12.7kcal/molHPMSDavidson and Kebarle, 1976gas phase; switching reaction(K+)H2O; Davidson and Kebarle, 1976, 2; M

Lithium ion (1+) + Methylamine = (Lithium ion (1+) bullet Methylamine)

By formula: Li+ + CH5N = (Li+ bullet CH5N)

Quantity Value Units Method Reference Comment
Deltar41.1kcal/molICRWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M
Quantity Value Units Method Reference Comment
Deltar26.cal/mol*KN/AWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M
Quantity Value Units Method Reference Comment
Deltar33.3kcal/molICRWoodin and Beauchamp, 1978gas phase; switching reaction(Li+)H2O, Entropy change calculated or estimated; Dzidic and Kebarle, 1970 interpolated; M

Sodium ion (1+) + Methylamine = (Sodium ion (1+) bullet Methylamine)

By formula: Na+ + CH5N = (Na+ bullet CH5N)

Quantity Value Units Method Reference Comment
Deltar26.3 ± 0.2kcal/molHPMSHoyau, Norrman, et al., 1999RCD
Deltar32.1kcal/molHPMSGuo and Castleman, 1990gas phase; M
Quantity Value Units Method Reference Comment
Deltar22600.cal/mol*KHPMSHoyau, Norrman, et al., 1999RCD
Deltar30.3cal/mol*KHPMSGuo and Castleman, 1990gas phase; M

Free energy of reaction

DeltarG° (kcal/mol) T (K) Method Reference Comment
19.5298.IMREMcMahon and Ohanessian, 2000Anchor alanine=39.89; RCD

Lead ion (1+) + Methylamine = (Lead ion (1+) bullet Methylamine)

By formula: Pb+ + CH5N = (Pb+ bullet CH5N)

Quantity Value Units Method Reference Comment
Deltar35.4 ± 0.3kcal/molHPMSGuo and Castleman, 1990gas phase; M
Quantity Value Units Method Reference Comment
Deltar30.0cal/mol*KHPMSGuo and Castleman, 1990gas phase; M

(Lead ion (1+) bullet Methylamine) + Methylamine = (Lead ion (1+) bullet 2Methylamine)

By formula: (Pb+ bullet CH5N) + CH5N = (Pb+ bullet 2CH5N)

Quantity Value Units Method Reference Comment
Deltar19.1 ± 0.2kcal/molHPMSGuo and Castleman, 1990gas phase; M
Quantity Value Units Method Reference Comment
Deltar19.5cal/mol*KHPMSGuo and Castleman, 1990gas phase; M

IR Spectrum

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, Ion clustering data, Mass spectrum (electron ionization), UV/Visible spectrum, Vibrational and/or electronic energy levels, Gas Chromatography, NIST Free Links, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Gas Phase Spectrum

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Additional Data

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Owner NIST Standard Reference Data Program
Collection (C) 2018 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Sadtler Research Labs Under US-EPA Contract
State gas

This IR spectrum is from the NIST/EPA Gas-Phase Infrared Database .


Mass spectrum (electron ionization)

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, UV/Visible spectrum, Vibrational and/or electronic energy levels, Gas Chromatography, NIST Free Links, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Spectrum

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Additional Data

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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin Japan AIST/NIMC Database- Spectrum MS-NW- 377
NIST MS number 228024

All mass spectra in this site (plus many more) are available from the NIST/EPA/NIH Mass Spectral Library. Please see the following for information about the library and its accompanying search program.


UV/Visible spectrum

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), Vibrational and/or electronic energy levels, Gas Chromatography, NIST Free Links, 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: Victor Talrose, Eugeny B. Stern, Antonina A. Goncharova, Natalia A. Messineva, Natalia V. Trusova, Margarita V. Efimkina

Spectrum

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Source Tannenbaum, Coffin, et al., 1953
Owner INEP CP RAS, NIST OSRD
Collection (C) 2007 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS
Source reference RAS UV No. 2772
Instrument n.i.g.
Sample pressure 0.01-1.8 mm Hg
Melting point -93.4
Boiling point -6.3

Vibrational and/or electronic energy levels

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Gas Chromatography, NIST Free Links, 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: Takehiko Shimanouchi

Symmetry:   Cs     Symmetry Number sigma = 1


 Sym.   No   Approximate   Selected Freq.  Infrared   Raman   Comments 
 Species   type of mode   Value   Rating   Value  Phase  Value  Phase

a' 1 NH2 s-str 3361  B 3361 W gas 3360 VS gas
a' 2 CH3 d-str 2961  B 2961 VS gas 2960 VS gas
a' 3 CH3 s-str 2820  B 2820 VS gas 2820 S gas
a' 4 NH2 scis 1623  B 1623 S gas
a' 5 CH3 d-deform 1473  B 1473 S gas 1460 M
a' 6 CH3 s-deform 1430  B 1430 M gas
a' 7 CH3 rock 1130  A 1130 M gas
a' 8 CN str 1044  A 1044 S gas 1044 S
a' 9 NH2 wag 780  A 780 VS gas 781 W
a 10 NH2 a-str 3427  C 3427 W gas 3470 W
a 11 CH3 d-str 2985  C 2985 VS gas
a 12 CH3 d-deform 1485  D 1485 gas Estimated from R()Q) branch frequency
a 13 NH2 twist 1419  D CF
a 14 CH3 rock 1195  D 1195 gas Estimated from R()Q) branch frequency
a 15 Torsion 268  B 268 gas MW: 272«nu»A) 265«nu»E)

Source: Shimanouchi, 1972

Notes

VSVery strong
SStrong
MMedium
WWeak
CFCalculated frequency
MWTorsional Frequency calculated from microwave spectroscopic data.
A0~1 cm-1 uncertainty
B1~3 cm-1 uncertainty
C3~6 cm-1 uncertainty
D6~15 cm-1 uncertainty

Gas Chromatography

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Vibrational and/or electronic energy levels, NIST Free Links, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director

Kovats' RI, non-polar column, isothermal

View large format table.

Column type Active phase Temperature (C) I Reference Comment
PackedPMS-100180.305.Anderson, Jurel, et al., 1973He, Celite 545 (44-60 mesh); Column length: 3. m

Normal alkane RI, non-polar column, custom temperature program

View large format table.

Column type Active phase I Reference Comment
CapillaryMethyl Silicone380.Chen and Feng, 2007Program: not specified
CapillaryPolydimethyl siloxanes328.Zenkevich and Chupalov, 1996Program: not specified

References

Go To: Top, Gas phase thermochemistry data, Condensed phase thermochemistry data, Phase change data, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Vibrational and/or electronic energy levels, Gas Chromatography, NIST Free Links, Notes

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

Aston, Siller, et al., 1937
Aston, J.G.; Siller, C.W.; Messerly, G.H., Heat capacities and entropies of organic compounds. III. Methylamine from 11.5°K. to the boiling point. Heat of vaporization and vapor pressure. The entropy from molecular data, J. Am. Chem. Soc., 1937, 59, 1743-17. [all data]

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Lemoult, M.P., Recherches theoriques et experimentales sur les chaleurs de combustion et de formation des composes organiques, Ann. Chim. Phys., 1907, 12, 395-432. [all data]

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Muller, J.-A., Sur les chaleurs de combustion et les poids specifiques des methylamines, Ann. Chim. Phys., 1910, 20, 116-130. [all data]

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Aston, J.G.; Siller, C.W.; Messerly, G.H., Heat capacities and entropies of organic compounds. III. Methylamine from 12K to the boiling point. Heat of vaporization and vapor pressure. The entropy from molecular data, J. Am. Chem. Soc., 1937, 59, 1743-1751. [all data]

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Aston, J.G.; Siller, C.W.; Messerly, G.H., Heat Capacities and Entropies of Organic Compounds III. Methylamine from 11.5 K to the Boiling Point. Heat of Vaporization and Vapor Pressure. The Entropy from Molecular Data, J. Am. Chem. Soc., 1937, 59, 1743. [all data]

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Davidson, W.R.; Kebarle, P., Binding Energies and Stabilities of Potassium Ion Complexes from Studies of Gas Phase Ion Equilibria K+ + M = K+.M, J. Am. Chem. Soc., 1976, 98, 20, 6133, https://doi.org/10.1021/ja00436a011 . [all data]

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Davidson, W.R.; Kebarle, P., Ionic Solvation by Aprotic Solvents. Gas Phase Solvation of the Alkali Ions by Acetonitrile, J. Am. Chem. Soc., 1976, 98, 20, 6125, https://doi.org/10.1021/ja00436a010 . [all data]

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Hoyau, S.; Norrman, K.; McMahon, T.B.; Ohanessian, G., A Quantitative Basis for a Scale of Na+ Affinities of Organic and Small Biological Molecules in the Gas Phase, J. Am. Chem. Soc., 1999, 121, 38, 8864, https://doi.org/10.1021/ja9841198 . [all data]

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Guo, B.C.; Castleman, A.W., The Association Reactions of Pb+ Ion with CH3OH and CH3NH2 in the Gas Phase, Int. J. Mass Spectrom. Ion Proc., 1990, 100, 665, https://doi.org/10.1016/0168-1176(90)85101-7 . [all data]

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Radisic, D.; Xu, S.J.; Bowen, K.H., Photoelectron spectroscopy of the anions, CH3NH- and (CH3)(2)N- and the anion complexes, H-(CH3NH2) and (CH3)(2)N-[(CH3)(2)NH), Chem. Phys. Lett., 2002, 354, 1-2, 9-13, https://doi.org/10.1016/S0009-2614(01)01470-1 . [all data]

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MacKay, G.J.; Hemsworth, R.S.; Bohme, D.K., Absolute gas-phase acidities of CH3NH2, C2H5NH2, (CH3)2NH, and (CH3)3N, Can. J. Chem., 1976, 54, 1624. [all data]

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Chen and Feng, 2007
Chen, Y.; Feng, C., QSPR study on gas chromatography retention index of some organic pollutants, Comput. Appl. Chem. (China), 2007, 24, 10, 1404-1408. [all data]

Zenkevich and Chupalov, 1996
Zenkevich, I.G.; Chupalov, A.A., New Possibilities of Chromato Mass Pectrometric Identification of Organic Compounds Using Increments of Gas Chromatographic Retention Indices of Molecular Structural Fragments, Zh. Org. Khim. (Rus.), 1996, 32, 5, 656-666. [all data]


Notes

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