Aniline, N-methyl-

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Reaction thermochemistry data

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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
B - John E. Bartmess
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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Individual Reactions

C7H9N+ + Aniline, N-methyl- = (C7H9N+ • Aniline, N-methyl-)

By formula: C7H9N+ + C7H9N = (C7H9N+ • C7H9N)

Bond type: Charge transfer bond (positive ion)

Quantity Value Units Method Reference Comment
Δr16.4kcal/molPHPMSMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M
Quantity Value Units Method Reference Comment
Δr23.3cal/mol*KN/AMeot-Ner (Mautner) and El-Shall, 1986gas phase; Entropy change calculated or estimated; M

C7H8N- + Hydrogen cation = Aniline, N-methyl-

By formula: C7H8N- + H+ = C7H9N

Quantity Value Units Method Reference Comment
Δr364.8 ± 2.1kcal/molG+TSTaft, 1987gas phase; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Δr357.5 ± 2.0kcal/molIMRETaft, 1987gas phase; value altered from reference due to change in acidity scale; B

Aniline, N-methyl- = 0.5Benzenamine, N,N-dimethyl- + 0.5Aniline

By formula: C7H9N = 0.5C8H11N + 0.5C6H7N

Quantity Value Units Method Reference Comment
Δr-0.8kcal/molEqkMatvienko, Kachurin, et al., 1982liquid phase; Methansulfonic acid; ALS
Δr-0.9kcal/molKinKachurin, Matvienko, et al., 1979liquid phase; ALS

Gas phase ion energetics data

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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
LL - Sharon G. Lias and Joel F. Liebman

View reactions leading to C7H9N+ (ion structure unspecified)

Quantity Value Units Method Reference Comment
IE (evaluated)7.32 ± 0.02eVN/AN/AL
Quantity Value Units Method Reference Comment
Proton affinity (review)219.1kcal/molN/AHunter and Lias, 1998HL
Quantity Value Units Method Reference Comment
Gas basicity212.7kcal/molN/AHunter and Lias, 1998HL

Ionization energy determinations

IE (eV) Method Reference Comment
7.38 ± 0.05EQMautner(Meot-Ner), Nelsen, et al., 1984LBLHLM
7.3PEKlasinc, Kovac, et al., 1983LBLHLM
7.35 ± 0.02PEMaier and Turner, 1973LLK
7.32PECowling and Johnstone, 1973LLK
7.30 ± 0.05PIAkopyan and Vilesov, 1964RDSH
7.34 ± 0.02PIVilesov and Terenin, 1957RDSH
7.53PEKlasinc, Kovac, et al., 1983Vertical value; LBLHLM
7.73PEBaker, May, et al., 1968Vertical value; RDSH

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C6H6+10.98 ± 0.09?EISelim, Rabbih, et al., 1992LL
C7H8N+11.0 ± 0.1HPIAkopyan and Vilesov, 1964RDSH

De-protonation reactions

C7H8N- + Hydrogen cation = Aniline, N-methyl-

By formula: C7H8N- + H+ = C7H9N

Quantity Value Units Method Reference Comment
Δr364.8 ± 2.1kcal/molG+TSTaft, 1987gas phase; value altered from reference due to change in acidity scale; B
Quantity Value Units Method Reference Comment
Δr357.5 ± 2.0kcal/molIMRETaft, 1987gas phase; value altered from reference due to change in acidity scale; B

Gas Chromatography

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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

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Column type Active phase Temperature (C) I Reference Comment
CapillaryOV-101150.1040.4Cha and Lee, 1994Column length: 20. m; Column diameter: 0.5 mm
CapillaryOV-101180.1052.2Cha and Lee, 1994Column length: 20. m; Column diameter: 0.5 mm

Kovats' RI, polar column, isothermal

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Column type Active phase Temperature (C) I Reference Comment
PackedCarbowax 20M150.1726.6Ellis and Still, 1979Chromosorb W, AW-DMCS
PackedPEG-2000179.1747.Anderson, Jurel, et al., 1973He, Celite 545 (44-60 mesh); Column length: 3. m
PackedPEG-2000180.1737.Anderson, Jurel, et al., 1973He, Celite 545 (44-60 mesh); Column length: 3. m
PackedPEG-2000200.1746.Anderson, Jurel, et al., 1973He, Celite 545 (44-60 mesh); Column length: 3. m
PackedPEG-2000200.1750.Anderson, Jurel, et al., 1973He, Celite 545 (44-60 mesh); Column length: 3. m
PackedPEG-20M210.1719.8Still, Evans, et al., 1972Chromosorb G; Column length: 3. m
PackedPEG-20M210.1717.9Still, Evans, et al., 1972Chromosorb G; Column length: 3. m

Van Den Dool and Kratz RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryOV-11035.Gautzsch and Zinn, 19968. K/min; Tstart: 35. C; Tend: 300. C
PackedSE-301056.Peng, Ding, et al., 1988He, Supelcoport and Chromosorb, 40. C @ 4. min, 10. K/min, 250. C @ 60. min; Column length: 3.05 m

Van Den Dool and Kratz RI, non-polar column, custom temperature program

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Column type Active phase I Reference Comment
Capillary5 % Phenyl methyl siloxane1062.Yasuhara, Shiraishi, et al., 199725. m/0.31 mm/0.52 μm, He; Program: 50C(2min) => (20C/min) => 120C => (7C/min) => 310C(10min)
CapillaryMethyl Silicone1056.Peng, Yang, et al., 1991Program: not specified

Normal alkane RI, non-polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillaryDB-51069.Moio, Dekimpe, et al., 199330. m/0.32 mm/1. μm, H2, 3. K/min; Tstart: 40. C; Tend: 220. C
CapillarySPB-11041.Thomas and Bassols, 19925. K/min; Column length: 60. m; Tstart: 80. C; Tend: 230. C
CapillaryUltra-11031.Okumura, 199125. m/0.32 mm/0.25 μm, He, 3. K/min; Tstart: 80. C; Tend: 260. C

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

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Column type Active phase I Reference Comment
CapillaryMethyl Silicone1041.Zenkevich, 1999Program: not specified

Normal alkane RI, polar column, temperature ramp

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Column type Active phase I Reference Comment
CapillarySupelcowax1746.Thomas and Bassols, 19925. K/min; Column length: 60. m; Tstart: 80. C; Tend: 230. C

Normal alkane RI, polar column, custom temperature program

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Column type Active phase I Reference Comment
CapillaryDB-Wax1686.Peng, Yang, et al., 1991, 2Program: not specified
CapillaryDB-Wax1711.Peng, Yang, et al., 1991, 2Program: not specified

References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Gas Chromatography, Notes

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

Meot-Ner (Mautner) and El-Shall, 1986
Meot-Ner (Mautner), M.; El-Shall, M.S., Ionic Charge Transfer Complexes. 1. Cationic Complexes with Delocalized and Partially Localized pi Systems, J. Am. Chem. Soc., 1986, 108, 15, 4386, https://doi.org/10.1021/ja00275a026 . [all data]

Taft, 1987
Taft, R.W., The Nature and Analysis of Substitutent Electronic Effects, Personal communication. See also Prog. Phys. Org. Chem., 1987, 16, 1. [all data]

Matvienko, Kachurin, et al., 1982
Matvienko, N.M.; Kachurin, O.I.; Chekhuta, V.G., Kinetics and equilibrium of the transalkylation reaction of N-methylarylamines, Russ. Chem. Rev., 1982, 48, 42-45. [all data]

Kachurin, Matvienko, et al., 1979
Kachurin, O.I.; Matvienko, N.M.; Chekhuta, V.G., Disproportionation of N-methylaniline, Russ. Chem. Rev., 1979, 45, 43-47. [all data]

Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G., Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update, J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018 . [all data]

Mautner(Meot-Ner), Nelsen, et al., 1984
Mautner(Meot-Ner), M.; Nelsen, S.F.; Willi, M.R.; Frigo, T.B., Special effects of an unusually large neutral to radical cation geometry change. Adiabatic ionization energies and proton affinities of alkylhydrazines, J. Am. Chem. Soc., 1984, 106, 7384. [all data]

Klasinc, Kovac, et al., 1983
Klasinc, L.; Kovac, B.; Gusten, H., Photoelectron spectra of acenes. Electronic structure and substituent effects, Pure Appl. Chem., 1983, 55, 289. [all data]

Maier and Turner, 1973
Maier, J.P.; Turner, D.W., Steric inhibition of resonance studied by molecular photoelectron spectroscopy Part 3. Anilines, Phenols and Related Compounds, J. Chem. Soc. Faraday Trans. 2, 1973, 69, 521. [all data]

Cowling and Johnstone, 1973
Cowling, S.A.; Johnstone, R.A.W., Photoelectron spectroscopy: The effects of steric inhibition to resonance in anilines, J. Electron Spectrosc. Relat. Phenom., 1973, 2, 161. [all data]

Akopyan and Vilesov, 1964
Akopyan, M.E.; Vilesov, F.I., Excited states of positive ions and dissociative photoionization of aromatic amines, Dokl. Akad. Nauk SSSR, 1964, 158, 1386, In original 965. [all data]

Vilesov and Terenin, 1957
Vilesov, F.I.; Terenin, A.N., The photoionization of the vapors of certain organic compounds, Dokl. Akad. Nauk SSSR, 1957, 115, 744, In original 539. [all data]

Baker, May, et al., 1968
Baker, A.D.; May, D.P.; Turner, D.W., Molecular photoelectron spectroscopy. Part VII. The vertical ionisation potentials of benzene and some of its monosubstituted and 1,4-disubstituted derivatives, J. Chem. Soc. B, 1968, 22. [all data]

Selim, Rabbih, et al., 1992
Selim, E.T.M.; Rabbih, M.A.; Fahmey, M.A.; Hawash, M.F., Electron impact study of [C6H6]+ fragment ions produced from isomeric C7H9N precursors using the deconvoluted first differential technique and kinetic release measurements, Int. J. Mass Spectrom. Ion Processes, 1992, 113, 133. [all data]

Cha and Lee, 1994
Cha, K.-W.; Lee, D.-J., Prediction of retention indices of various compounds in gas-liquid chromatography, J. Korean Chem. Soc., 1994, 38, 2, 108-120, retrieved from http://journal.kcsnet.or.kr/publi/dh/dh94n2/108.pdf. [all data]

Ellis and Still, 1979
Ellis, T.S.; Still, R.H., Thermal degradation of polymers. XXI. Vacuum pyrolysis of poly(m-N,N-dimethylaminostyrene); the products volatile at pyrolysis temperature, liquid at room temperature, J. Appl. Polym. Sci., 1979, 23, 10, 2837-2854, https://doi.org/10.1002/app.1979.070231002 . [all data]

Anderson, Jurel, et al., 1973
Anderson, A.; Jurel, S.; Shymanska, M.; Golender, L., Gas-liquid chromatography of some aliphatic and heterocyclic mono- and pollyfunctional amines. VII. Retention indices of amines in some polar and unpolar stationary phases, Latv. PSR Zinat. Akad. Vestis Kim. Ser., 1973, 1, 51-63. [all data]

Still, Evans, et al., 1972
Still, R.H.; Evans, M.B.; Whitehead, A., Thermal Degradation of Polymers. V. Vacuum Pyrolysis of Poly (p-N,N-dimethylaminostyrene) . The Products Volatile at Pyrolysis Temperature, Liquid or Gaseous at Room Temperature, J. Appl. Polym. Sci., 1972, 16, 12, 3207-3221, https://doi.org/10.1002/app.1972.070161213 . [all data]

Gautzsch and Zinn, 1996
Gautzsch, R.; Zinn, P., Use of incremental models to estimate the retention indexes of aromatic compounds, Chromatographia, 1996, 43, 3/4, 163-176, https://doi.org/10.1007/BF02292946 . [all data]

Peng, Ding, et al., 1988
Peng, C.T.; Ding, S.F.; Hua, R.L.; Yang, Z.C., Prediction of Retention Indexes I. Structure-Retention Index Relationship on Apolar Columns, J. Chromatogr., 1988, 436, 137-172, https://doi.org/10.1016/S0021-9673(00)94575-8 . [all data]

Yasuhara, Shiraishi, et al., 1997
Yasuhara, A.; Shiraishi, H.; Nishikawa, M.; Yamamoto, T.; Uehiro, T.; Nakasugi, O.; Okumura, T.; Kenmotsu, K.; Fukui, H.; Nagase, M.; Ono, Y.; Kawagoshi, Y.; Baba, K.; Noma, Y., Determination of organic components in leachates from hazardous waste disposal sites in Japan by gas chromatography-mass spectrometry, J. Chromatogr. A, 1997, 774, 1-2, 321-332, https://doi.org/10.1016/S0021-9673(97)00078-2 . [all data]

Peng, Yang, et al., 1991
Peng, C.T.; Yang, Z.C.; Maltby, D., Prediction of retention indexes. III. Silylated derivatives of polar compounds, J. Chromatogr., 1991, 586, 1, 113-129, https://doi.org/10.1016/0021-9673(91)80029-G . [all data]

Moio, Dekimpe, et al., 1993
Moio, L.; Dekimpe, J.; Etievant, P.; Addeo, F., Neutral volatile compounds in the raw milks from different species, J. Dairy Res., 1993, 60, 2, 199-213, https://doi.org/10.1017/S0022029900027515 . [all data]

Thomas and Bassols, 1992
Thomas, A.F.; Bassols, F., Occurrence of pyridines and other bases in orange oil, J. Agric. Food Chem., 1992, 40, 11, 2236-2243, https://doi.org/10.1021/jf00023a037 . [all data]

Okumura, 1991
Okumura, T., retention indices of environmental chemicals on methyl silicone capillary column, Journal of Environmental Chemistry (Japan), 1991, 1, 2, 333-358, https://doi.org/10.5985/jec.1.333 . [all data]

Zenkevich, 1999
Zenkevich, I.G., Precalculation of Gas Chromatographic Retention Indices of Organic Compounds from Boiling Points of their Structural Analogues, Zh. Struct. Khim., 1999, 40, 1, 121-130. [all data]

Peng, Yang, et al., 1991, 2
Peng, C.T.; Yang, Z.C.; Ding, S.F., Prediction of rentention idexes. II. Structure-retention index relationship on polar columns, J. Chromatogr., 1991, 586, 1, 85-112, https://doi.org/10.1016/0021-9673(91)80028-F . [all data]


Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Gas Chromatography, References