Aniline, N-methyl-
- Formula: C7H9N
- Molecular weight: 107.1531
- IUPAC Standard InChIKey: AFBPFSWMIHJQDM-UHFFFAOYSA-N
- CAS Registry Number: 100-61-8
- Chemical structure:
This structure is also available as a 2d Mol file or as a computed 3d SD file
The 3d structure may be viewed using Java or Javascript. - Other names: (Methylamino)benzene; Benzenamine, N-methyl-; Anilinomethane; Methylphenylamine; N-Methylaniline; N-Methylbenzenamine; N-Methylphenylamine; N-Monomethylaniline; N-Phenylmethylamine; N-Methylaminobenzene; Monomethylaniline; Methylaniline; Benzeneamine, N-methyl-; UN 2294; NSC 3502
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Reaction thermochemistry data
Go To: Top, Gas phase ion energetics data, Gas Chromatography, 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
B - John E. Bartmess
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
By formula: C7H9N+ + C7H9N = (C7H9N+ • C7H9N)
Bond type: Charge transfer bond (positive ion)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 16.4 | kcal/mol | PHPMS | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
Quantity | Value | Units | Method | Reference | Comment |
ΔrS° | 23.3 | cal/mol*K | N/A | Meot-Ner (Mautner) and El-Shall, 1986 | gas phase; Entropy change calculated or estimated; M |
C7H8N- + =
By formula: C7H8N- + H+ = C7H9N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 364.8 ± 2.1 | kcal/mol | G+TS | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 357.5 ± 2.0 | kcal/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale; B |
By formula: C7H9N = 0.5C8H11N + 0.5C6H7N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -0.8 | kcal/mol | Eqk | Matvienko, Kachurin, et al., 1982 | liquid phase; Methansulfonic acid; ALS |
ΔrH° | -0.9 | kcal/mol | Kin | Kachurin, Matvienko, et al., 1979 | liquid phase; ALS |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry data, Gas Chromatography, 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
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 ± 0.02 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 219.1 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 212.7 | kcal/mol | N/A | Hunter and Lias, 1998 | HL |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
7.38 ± 0.05 | EQ | Mautner(Meot-Ner), Nelsen, et al., 1984 | LBLHLM |
7.3 | PE | Klasinc, Kovac, et al., 1983 | LBLHLM |
7.35 ± 0.02 | PE | Maier and Turner, 1973 | LLK |
7.32 | PE | Cowling and Johnstone, 1973 | LLK |
7.30 ± 0.05 | PI | Akopyan and Vilesov, 1964 | RDSH |
7.34 ± 0.02 | PI | Vilesov and Terenin, 1957 | RDSH |
7.53 | PE | Klasinc, Kovac, et al., 1983 | Vertical value; LBLHLM |
7.73 | PE | Baker, May, et al., 1968 | Vertical value; RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C6H6+ | 10.98 ± 0.09 | ? | EI | Selim, Rabbih, et al., 1992 | LL |
C7H8N+ | 11.0 ± 0.1 | H | PI | Akopyan and Vilesov, 1964 | RDSH |
De-protonation reactions
C7H8N- + =
By formula: C7H8N- + H+ = C7H9N
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 364.8 ± 2.1 | kcal/mol | G+TS | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 357.5 ± 2.0 | kcal/mol | IMRE | Taft, 1987 | gas phase; value altered from reference due to change in acidity scale; B |
Gas Chromatography
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Kovats' RI, non-polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Capillary | OV-101 | 150. | 1040.4 | Cha and Lee, 1994 | Column length: 20. m; Column diameter: 0.5 mm |
Capillary | OV-101 | 180. | 1052.2 | Cha and Lee, 1994 | Column length: 20. m; Column diameter: 0.5 mm |
Kovats' RI, polar column, isothermal
Column type | Active phase | Temperature (C) | I | Reference | Comment |
---|---|---|---|---|---|
Packed | Carbowax 20M | 150. | 1726.6 | Ellis and Still, 1979 | Chromosorb W, AW-DMCS |
Packed | PEG-2000 | 179. | 1747. | Anderson, Jurel, et al., 1973 | He, Celite 545 (44-60 mesh); Column length: 3. m |
Packed | PEG-2000 | 180. | 1737. | Anderson, Jurel, et al., 1973 | He, Celite 545 (44-60 mesh); Column length: 3. m |
Packed | PEG-2000 | 200. | 1746. | Anderson, Jurel, et al., 1973 | He, Celite 545 (44-60 mesh); Column length: 3. m |
Packed | PEG-2000 | 200. | 1750. | Anderson, Jurel, et al., 1973 | He, Celite 545 (44-60 mesh); Column length: 3. m |
Packed | PEG-20M | 210. | 1719.8 | Still, Evans, et al., 1972 | Chromosorb G; Column length: 3. m |
Packed | PEG-20M | 210. | 1717.9 | Still, Evans, et al., 1972 | Chromosorb G; Column length: 3. m |
Van Den Dool and Kratz RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | OV-1 | 1035. | Gautzsch and Zinn, 1996 | 8. K/min; Tstart: 35. C; Tend: 300. C |
Packed | SE-30 | 1056. | Peng, Ding, et al., 1988 | He, 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
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | 5 % Phenyl methyl siloxane | 1062. | Yasuhara, Shiraishi, et al., 1997 | 25. m/0.31 mm/0.52 μm, He; Program: 50C(2min) => (20C/min) => 120C => (7C/min) => 310C(10min) |
Capillary | Methyl Silicone | 1056. | Peng, Yang, et al., 1991 | Program: not specified |
Normal alkane RI, non-polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-5 | 1069. | Moio, Dekimpe, et al., 1993 | 30. m/0.32 mm/1. μm, H2, 3. K/min; Tstart: 40. C; Tend: 220. C |
Capillary | SPB-1 | 1041. | Thomas and Bassols, 1992 | 5. K/min; Column length: 60. m; Tstart: 80. C; Tend: 230. C |
Capillary | Ultra-1 | 1031. | Okumura, 1991 | 25. 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
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Methyl Silicone | 1041. | Zenkevich, 1999 | Program: not specified |
Normal alkane RI, polar column, temperature ramp
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | Supelcowax | 1746. | Thomas and Bassols, 1992 | 5. K/min; Column length: 60. m; Tstart: 80. C; Tend: 230. C |
Normal alkane RI, polar column, custom temperature program
Column type | Active phase | I | Reference | Comment |
---|---|---|---|---|
Capillary | DB-Wax | 1686. | Peng, Yang, et al., 1991, 2 | Program: not specified |
Capillary | DB-Wax | 1711. | Peng, Yang, et al., 1991, 2 | Program: 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
- Symbols used in this document:
AE Appearance energy IE (evaluated) Recommended ionization energy ΔrG° Free energy of reaction at standard conditions ΔrH° Enthalpy of reaction at standard conditions ΔrS° Entropy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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