Benzonitrile, 4-methyl-

• Formula: C₈H₇N
• Molecular weight: 117.1479
• IUPAC Standard InChI: InChI=1S/C8H7N/c1-7-2-4-8(6-9)5-3-7/h2-5H,1H3 Copy

  
• IUPAC Standard InChIKey: VCZNNAKNUVJVGX-UHFFFAOYSA-N Copy
• CAS Registry Number: 104-85-8
• Chemical structure:
  This structure is also available as a 2d Mol file or as a computed 3d SD file
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• Other names: p-Tolunitrile; p-Cyanotoluene; p-Methylbenzonitrile; p-Toluenenitrile; p-Toluic nitrile; p-Toluonitrile; p-Tolylnitrile; 4-Methylbenzonitrile; 4-Tolunitrile; p-Tolunitril; Nitril kyseliny p-toluylove; 1-Methyl-4-cyanobenzene; 4-Cyanotoluene; 4-Methylcyanobenzene; 4-Toluenkarbonitril; 1-Cyano-4-methylbenzene; NSC 70985
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• Information on this page:
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
  • References
  • Notes
• Other data available:
  • Phase change data
  • Gas Chromatography
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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 by: John E. Bartmess

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Individual Reactions

C₈H₆N^- +  =

By formula: C₈H₆N^- + H⁺ = C₈H₇N

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 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 C₈H₇N⁺ (ion structure unspecified)

Ionization energy determinations

Appearance energy determinations

De-protonation reactions

C₈H₆N^- +  =

By formula: C₈H₆N^- + H⁺ = C₈H₇N

IR Spectrum

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Data compiled by: Coblentz Society, Inc.

• SOLUTION (10% IN CCl4 FOR 3800-1330 CM^-1, 10% IN CS2 FOR 1330-450 CM^-1); DOW KBr FOREPRISM-GRATING; DIGITIZED BY NIST FROM HARD COPY (FROM TWO SEGMENTS); 4 cm^-1 resolution

Data compiled by: NIST Mass Spectrometry Data Center, William E. Wallace, director

• gas

Mass spectrum (electron ionization)

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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

Spectrum

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Additional Data

UV/Visible spectrum

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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: Victor Talrose, Alexander N. Yermakov, Alexy A. Usov, Antonina A. Goncharova, Axlexander N. Leskin, Natalia A. Messineva, Natalia V. Trusova, Margarita V. Efimkina

Spectrum

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Additional Data

References

Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, Mass spectrum (electron ionization), UV/Visible spectrum, Notes

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

Kahn, Hehre, et al., 1984
Kahn, S.D.; Hehre, W.J.; Bartmess, J.E.; Caldwell, G., Effect of Metal Complexation on the Gas-phase Acidities of Alkylbenzenes, Organomet., 1984, 3, 11, 1740, https://doi.org/10.1021/om00089a024 . [all data]

Van Der Greef, Molenaar-Langeveld, et al., 1979
Van Der Greef, J.; Molenaar-Langeveld, T.A.; Nibbering, N.M.M., The elimination of HCN (or HNC) from the molecular ions of some isomeric C₈H₇N compounds, studied by field ionization kinetic and kinetic energy release measurements, Int. J. Mass Spectrom. Ion Phys., 1979, 29, 11. [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]

Buchs, 1970
Buchs, A., Etude par spectrometrie de masse de l'ionisation de benzonitriles, de phenylacetonitriles et de N,N-dimethylanilines substitues, Helv. Chim. Acta, 1970, 53, 2026. [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]

Palmer, Moyes, et al., 1980
Palmer, M.H.; Moyes, W.; Spiers, M., The electronic structure of substituted benzenes: Ab initio calculations and photoelectron spectra for benzonitrile, the tolunitriles, fluorobenzonitriles, dicyanobenzenes and ethynylbenzene, J. Mol. Struct., 1980, 62, 165. [all data]

Kobayashi and Nagakura, 1974
Kobayashi, T.; Nagakura, S., Photoelectron spectra of substituted benzenes, Bull. Chem. Soc. Jpn., 1974, 47, 2563. [all data]

Bol'shakov, et al., 1969
Bol'shakov, G.F., et al., Ultraviolet spectra of heteroorganic compounds, 1969, 175. [all data]

Notes

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• 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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