Benzenamine, 4-methoxy-

• Formula: C₇H₉NO
• Molecular weight: 123.1525
• IUPAC Standard InChI: InChI=1S/C7H9NO/c1-9-7-4-2-6(8)3-5-7/h2-5H,8H2,1H3 Copy

  
• IUPAC Standard InChIKey: BHAAPTBBJKJZER-UHFFFAOYSA-N Copy
• CAS Registry Number: 104-94-9
• 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: p-Anisidine; p-Aminoanisole; p-Anisylamine; p-Methoxyaniline; p-Methoxyphenylamine; 4-Aminoanisole; 4-Anisidine; 4-Methoxyaniline; 4-Methoxybenzenamine; 4-Methoxybenzeneamine; para-Anisidine; Aniline, p-methoxy-; Anisole, p-amino-; 1-Amino-4-methoxybenzene; 4-Methoxy-1-aminobenzene; NSC 7921; Anisidine
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• Information on this page:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Other data available:
  • Phase change data
  • IR Spectrum
  • UV/Visible spectrum
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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Reaction thermochemistry data

Go To: Top, Gas phase ion energetics data, Mass spectrum (electron ionization), References, Notes

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

Data compiled as indicated in comments:
B - John E. Bartmess
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

C₇H₈NO^- +  =

By formula: C₇H₈NO^- + H⁺ = C₇H₉NO

 +  =  + 

By formula: C₇H₉NO + C₇H₅IO = HI + C₁₄H₁₃NO₂

 +  =  + 

By formula: C₇H₉NO + C₇H₅BrO = HBr + C₁₄H₁₃NO₂

 +  =  + 

By formula: C₇H₉NO + C₇H₅ClO = C₁₄H₁₃NO₂ + HCl

= 0.5 + 0.5

By formula: C₈H₁₁NO = 0.5C₇H₉NO + 0.5C₉H₁₃NO

=  + 

By formula: C₁₅H₁₆N₂O₃ = C₇H₉NO + C₈H₇NO₂

Gas phase ion energetics data

Go To: Top, Reaction thermochemistry data, Mass spectrum (electron ionization), 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

Data compiled as indicated in comments:
B - John E. Bartmess
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 C₇H₉NO⁺ (ion structure unspecified)

Ionization energy determinations

Appearance energy determinations

De-protonation reactions

C₇H₈NO^- +  =

By formula: C₇H₈NO^- + H⁺ = C₇H₉NO

Mass spectrum (electron ionization)

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

Spectrum

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Additional Data

References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), Notes

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

Bartmess, Scott, et al., 1979
Bartmess, J.E.; Scott, J.A.; McIver, R.T., Jr., The gas phase acidity scale from methanol to phenol, J. Am. Chem. Soc., 1979, 101, 6047. [all data]

Kiselev, Khuzyasheva, et al., 1979
Kiselev, V.D.; Khuzyasheva, d.G.; Konovalov, A.I., Thermochemical study of the acylation of para-substituted anilines, J. Gen. Chem. USSR, 1979, 49, 2273-2276. [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]

Chimishkyan, Svetlova, et al., 1984
Chimishkyan, A.L.; Svetlova, L.P.; Leonova, T.V.; Gluyaev, N.D., Thermal decomposition of substituted ureas, J. Gen. Chem. USSR, 1984, 54, 1317-1320. [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]

Behan, Johnstone, et al., 1976
Behan, J.M.; Johnstone, R.A.W.; Bentley, T.W., An evaluation of empirical methods for calculating the ionization potentials of substituted benzenes, Org. Mass Spectrom., 1976, 11, 207. [all data]

Pykhtina, Cherednichenko, et al., 1974
Pykhtina, E.V.; Cherednichenko, L.V.; Kardash, I.E.; Evlasheva, T.I.; Sorokin, V.V.; Potapov, V.K.; Pravednikov, A.N., Ionization potentials of amines and energies of charge transfer bands in the absorption spectra of complexes of 7,7,8,8-tetracyanoquinodimethan, High Energy Chem., 1974, 8, 257, In original 307. [all data]

Johnstone and Mellon, 1973
Johnstone, R.A.W.; Mellon, F.A., Effects of induction and resonance in the calculation of ionization potentials of substituted benzenes by perturbation molecular orbital theory, J. Chem. Soc. Faraday Trans. 2, 1973, 69, 36. [all data]

Cooks, Bertrand, et al., 1973
Cooks, R.G.; Bertrand, M.; Beynon, J.H.; Rennekamp, M.E.; Setser, D.W., Energy partitioning data as an ion structure probe. Substituted anisoles, J. Am. Chem. Soc., 1973, 95, 1732. [all data]

Farrell and Newton, 1966
Farrell, P.G.; Newton, J., Ionization potentials of primary aromatic amines and aza-hydrocarbons, Tetrahedron Lett., 1966, 5517. [all data]

Crable and Kearns, 1962
Crable, G.F.; Kearns, G.L., Effect of substituent groups on the ionization potentials of benzenes, J. Phys. Chem., 1962, 66, 436. [all data]

Chmutova, Vtyurina, et al., 1979
Chmutova, G.A.; Vtyurina, N.N.; Komina, T.V.; Gazizov, I.G.; Bock, H., Molecular-orbital characteristics of anisole isologs X-C₆H₄-ECH₃ (E = O, S, Se) containing donor substituents X, Zh. Obshch. Khim., 1979, 49, 192. [all data]

Bernardi, Distefano, et al., 1975
Bernardi, F.; Distefano, G.; Mangini, A.; Pignataro, S.; Spunta, G., Photoelectron spectra of substituted anisoles thioanisoles, J. Electron Spectrosc. Relat. Phenom., 1975, 7, 457. [all data]

Brown, 1970
Brown, P., Kinetic studies in mass spectrometry. VIII. Competing [M-CH₃] and [M-CH₂O] reactions in substituted anisoles. Approximate activation energies from ionization appearance potentials, Org. Mass Spectrom., 1970, 4, 519. [all data]

Tait, Shannon, et al., 1962
Tait, J.M.S.; Shannon, T.W.; Harrison, A.G., The structure of substituted C₇ ions from benzyl derivatives at the appearance potential threshold, J. Am. Chem. Soc., 1962, 84, 4. [all data]

Notes

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Mass spectrum (electron ionization), References

• Symbols used in this document:
  

  AE	Appearance energy
  ΔrG°	Free energy of reaction at standard conditions
  ΔrH°	Enthalpy of reaction at standard conditions

• Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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