Anisole

• Formula: C₇H₈O
• Molecular weight: 108.1378
• IUPAC Standard InChI: InChI=1S/C7H8O/c1-8-7-5-3-2-4-6-7/h2-6H,1H3 Copy

  
• IUPAC Standard InChIKey: RDOXTESZEPMUJZ-UHFFFAOYSA-N Copy
• CAS Registry Number: 100-66-3
• 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: Benzene, methoxy-; Anizol; Methoxybenzene; Methyl phenyl ether; Phenyl methyl ether; Ether, methyl phenyl-; UN 2222; Phenoxymethane; Anisol; NSC 7920
• Permanent link for this species. Use this link for bookmarking this species for future reference.
• Information on this page:
  • Gas phase thermochemistry data
  • Reaction thermochemistry data
  • Gas phase ion energetics data
  • Ion clustering data
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Phase change data
  • Henry's Law data
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
  • X-ray Photoelectron Spectroscopy Database, version 5.0
  • X-ray Photoelectron Spectroscopy Database, version 5.0
• Options:
  • Switch to SI units

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• NIST / TRC Web Thermo Tables, professional edition (thermophysical and thermochemical data)

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Gas phase 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:
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
DRB - Donald R. Burgess, Jr.
GT - Glushko Thermocenter, Russian Academy of Sciences, Moscow

Constant pressure heat capacity of gas

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:
B - John E. Bartmess
M - Michael M. Meot-Ner (Mautner) and Sharon G. Lias
ALS - Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein
RCD - Robert C. Dunbar

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: Br^- + C₇H₈O = (Br^- • C₇H₈O)

Free energy of reaction

C₇H₇O^- +  =

By formula: C₇H₇O^- + H⁺ = C₇H₈O

C₇H₇O^- +  =

By formula: C₇H₇O^- + H⁺ = C₇H₈O

C₇H₇O^- +  =

By formula: C₇H₇O^- + H⁺ = C₇H₈O

 +  = ( • )

By formula: Cl^- + C₇H₈O = (Cl^- • C₇H₈O)

Free energy of reaction

 +  =  + 

By formula: HI + C₇H₇IO = C₇H₈O + I₂

( • ) +  = ( • 2)

By formula: (Li⁺ • C₇H₈O) + C₇H₈O = (Li⁺ • 2C₇H₈O)

( • ) +  = ( • 2)

By formula: (Na⁺ • C₇H₈O) + C₇H₈O = (Na⁺ • 2C₇H₈O)

( • ) +  = ( • 2)

By formula: (Cs⁺ • C₇H₈O) + C₇H₈O = (Cs⁺ • 2C₇H₈O)

( • ) +  = ( • 2)

By formula: (Rb⁺ • C₇H₈O) + C₇H₈O = (Rb⁺ • 2C₇H₈O)

( • ) +  = ( • 2)

By formula: (K⁺ • C₇H₈O) + C₇H₈O = (K⁺ • 2C₇H₈O)

 +  = ( • )

By formula: Li⁺ + C₇H₈O = (Li⁺ • C₇H₈O)

 +  = ( • )

By formula: Na⁺ + C₇H₈O = (Na⁺ • C₇H₈O)

 +  = ( • )

By formula: Cs⁺ + C₇H₈O = (Cs⁺ • C₇H₈O)

 +  = ( • )

By formula: Rb⁺ + C₇H₈O = (Rb⁺ • C₇H₈O)

 +  = ( • )

By formula: K⁺ + C₇H₈O = (K⁺ • C₇H₈O)

Gas phase ion energetics data

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Ion clustering data, IR Spectrum, 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
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 C₇H₈O⁺ (ion structure unspecified)

Ionization energy determinations

Appearance energy determinations

De-protonation reactions

C₇H₇O^- +  =

By formula: C₇H₇O^- + H⁺ = C₇H₈O

C₇H₇O^- +  =

By formula: C₇H₇O^- + H⁺ = C₇H₈O

C₇H₇O^- +  =

By formula: C₇H₇O^- + H⁺ = C₇H₈O

Ion clustering data

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, IR Spectrum, 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
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

 +  = ( • )

By formula: Br^- + C₇H₈O = (Br^- • C₇H₈O)

Free energy of reaction

 +  = ( • )

By formula: Cl^- + C₇H₈O = (Cl^- • C₇H₈O)

Free energy of reaction

 +  = ( • )

By formula: Cs⁺ + C₇H₈O = (Cs⁺ • C₇H₈O)

( • ) +  = ( • 2)

By formula: (Cs⁺ • C₇H₈O) + C₇H₈O = (Cs⁺ • 2C₇H₈O)

 +  = ( • )

By formula: K⁺ + C₇H₈O = (K⁺ • C₇H₈O)

( • ) +  = ( • 2)

By formula: (K⁺ • C₇H₈O) + C₇H₈O = (K⁺ • 2C₇H₈O)

 +  = ( • )

By formula: Li⁺ + C₇H₈O = (Li⁺ • C₇H₈O)

( • ) +  = ( • 2)

By formula: (Li⁺ • C₇H₈O) + C₇H₈O = (Li⁺ • 2C₇H₈O)

 +  = ( • )

By formula: Na⁺ + C₇H₈O = (Na⁺ • C₇H₈O)

( • ) +  = ( • 2)

By formula: (Na⁺ • C₇H₈O) + C₇H₈O = (Na⁺ • 2C₇H₈O)

 +  = ( • )

By formula: Rb⁺ + C₇H₈O = (Rb⁺ • C₇H₈O)

( • ) +  = ( • 2)

By formula: (Rb⁺ • C₇H₈O) + C₇H₈O = (Rb⁺ • 2C₇H₈O)

IR Spectrum

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering 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 by: NIST Mass Spectrometry Data Center, William E. Wallace, director

Gas Phase Spectrum

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Notice: Concentration information is not available for this spectrum and, therefore, molar absorptivity values cannot be derived.

Additional Data

Mass spectrum (electron ionization)

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, 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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For Zoom

1.) Enter the desired X axis range (e.g., 100, 200)

2.) Check here for automatic Y scaling

3.) Press here to zoom

Additional Data

References

Go To: Top, Gas phase thermochemistry data, Reaction thermochemistry data, Gas phase ion energetics data, Ion clustering data, IR Spectrum, 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.

Fenwick, Harrop, et al., 1975
Fenwick, J.O.; Harrop, D.; Head, A.J., Thermodynamic properties of organic oxygen compounds. 41. Enthalpies of formation of eight ethers, J. Chem. Thermodyn., 1975, 7, 943-954. [all data]

Lebedeva and Katin, 1972
Lebedeva, N.D.; Katin, Yu.A., Heats of combustion of certain monosubstituted benzenes, Russ. J. Phys. Chem. (Engl. Transl.), 1972, 46, 1088. [all data]

Pedley, Naylor, et al., 1986
Pedley, J.B.; Naylor, R.D.; Kirby, S.P., Thermochemical Data of Organic Compounds, Chapman and Hall, New York, 1986, 1-792. [all data]

Gray and Williams, 1959
Gray, P.; Williams, A., Chemistry of free radicals containing oxygen. Part 3.- Thermochemistry and reactivity of the higher alkoxyl radicals RO·, Trans. Faraday Soc., 1959, 55, 760-777. [all data]

Badoche, 1941
Badoche, M., No 19. - Chaleurs de combustion du phenol, du-m-cresol et del leurs ethers; par M. Marius BADOCHE., Bull. Soc. Chim. Fr., 1941, 8, 212-220. [all data]

Hales J.L., 1967
Hales J.L., Thermodynamic properties of organic oxygen compounds. Part 18. Vapor heat capacities and heats of vaporization of ethyl ketone, ethyl propyl ketone, methyl isopropyl ketone, and methyl phenyl ether, Trans. Faraday Soc., 1967, 63, 1876-1879. [all data]

Paul and Kebarle, 1991
Paul, G.J.C.; Kebarle, P., Stabilities of Complexes of Br- with Substituted Benzenes (SB) Based on Determinations of the Gas-Phase Equilibria Br- + SB = (BrSB)-, J. Am. Chem. Soc., 1991, 113, 4, 1148, https://doi.org/10.1021/ja00004a014 . [all data]

Dahlke and Kass, 1992
Dahlke, G.D.; Kass, S.R., The Ortho-dehydrophenoxy Anion, Int. J. Mass Spectrom. Ion Proc., 1992, 117, 633, https://doi.org/10.1016/0168-1176(92)80117-J . [all data]

French, Ikuta, et al., 1982
French, M.A.; Ikuta, S.; Kebarle, P., Hydrogen bonding of O-H and C-H hydrogen donors to Cl^-. Results from mass spectrometric measurement of the ion-molecule equilibria RH + Cl^- = RHCl^-, Can. J. Chem., 1982, 60, 1907. [all data]

Brennan and Ubbelohde, 1956
Brennan, D.; Ubbelohde, A.R., A thermochemical evaluation of bond strengths in some carbon compounds. Part IV. Bond-strength differences based on the reaction: RI + HI = RH + I₂, where R = p-methoxyphenyl and cyclohexyl, J. Chem. Soc., 1956, 3011-3016. [all data]

Amunugama and Rodgers, 2003
Amunugama, R.; Rodgers, M.T., Influence of substituents on cation-pi interactions - 5. Absolute binding energies of alkali metal cation-anisole complexes determined by threshold collision-induced dissociation and theoretical studies, Int. J. Mass Spectrom., 2003, 222, 1-3, 431, https://doi.org/10.1016/S1387-3806(02)00945-4 . [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]

Ponomarev, Arapov, et al., 1986
Ponomarev, D.A.; Arapov, O.V.; Sergeev, Y.L.; Chistyakov, A.B., [Title unavailable], Izv. Vyssh. Uchebn. Zaved., Khim. Khim. Tekhnol., 1986, 29, 107. [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]

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]

McLafferty, Bente, et al., 1973
McLafferty, F.W.; Bente, P.F., III; Kornfeld, R.; Tsai, S.-C.; Howe, I., Collisional activation spectra of organic ions, J. Am. Chem. Soc., 1973, 95, 2120. [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]

Kobayashi, Kobayashi, et al., 1973
Kobayashi, H.; Kobayashi, M.; Kaizu, Y., Molecular complexes of arenetricarbonylchromium, Bull. Chem. Soc. Jpn., 1973, 46, 3109. [all data]

Gilbert, Leach, et al., 1973
Gilbert, J.R.; Leach, W.P.; Miller, J.R., Ionisation appearance potential measurements in arene chromium tricarbonyls, J. Organomet. Chem., 1973, 49, 219. [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]

Pitt, Carey, et al., 1972
Pitt, C.G.; Carey, R.N.; Toren, E.C., Nature of the electronic interactions in aryl-substituted polysilanes, J. Am. Chem. Soc., 1972, 94, 3806. [all data]

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Gross, M.L., Ion cyclotron resonance spectrometry. A means of evaluating 'kinetic shifts', Org. Mass Spectrom., 1972, 6, 827. [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]

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Dewar, M.J.S.; Worley, S.D., Photoelectron spectra of molecules. I. Ionization potentials of some organic molecules and their interpretation, J. Chem. Phys., 1969, 50, 654. [all data]

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Williams, D.H.; Cooks, R.G.; Howe, I., Studies in mass spectrometry. XXXI. A comparison of reaction rates in common ions generated via fragmentation and direct ionization, J. Am. Chem. Soc., 1968, 90, 6759. [all data]

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Watanabe, K.; Nakayama, T.; Mottl, J., Ionization potentials of some molecules, J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]

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Watanabe, K., Ionization potentials of some molecules, J. Chem. Phys., 1957, 26, 542. [all data]

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Friege, H.; Klessinger, M., Elektronenstruktur von Alkyl-aryl- und Alkyl-vinyl-ethern, Chem. Ber., 1979, 112, 1614. [all data]

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Kobayashi, T., A simple general tendency in photoelectron angular distributions of some monosubstituted benzenes, Phys. Lett., 1978, 69, 105. [all data]

Benoit and Harrison, 1977
Benoit, F.M.; Harrison, A.G., Predictive value of proton affinity. Ionization energy correlations involving oxygenated molecules, J. Am. Chem. Soc., 1977, 99, 3980. [all data]

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

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Dewar, P.S.; Ernstbrunner, E.; Gilmore, J.R.; Godfrey, M.; Mellor, J.M., Conformational analysis of alkyl aryl ethers and alkyl aryl sulphides by photoelectron spectroscopy, Tetrahedron, 1974, 30, 2455. [all data]

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Das, P.R.; Gilman, J.P.; Meisels, G.G., Unimolecular decomposition of energy-selected anisole ions. Breakdown graph and metastable decay rates, Int. J. Mass Spectrom. Ion Processes, 1986, 68, 155. [all data]

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Harrison, A.G.; Haynes, P.; McLean, S.; Meyer, F., The mass spectra of methyl-substituted cyclopentadienes, J. Am. Chem. Soc., 1965, 87, 5099. [all data]

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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]

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Ziesel, J.P.; Lifshitz, C., Time-dependent mass spectra and breakdown graphs. 10. Dissociative photoionization of anisole, Chem. Phys., 1987, 117, 227. [all data]

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Notes

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

• Symbols used in this document:
  

  AE	Appearance energy
  Cp,gas	Constant pressure heat capacity of gas
  IE (evaluated)	Recommended ionization energy
  T	Temperature
  ΔfH°gas	Enthalpy of formation of gas at standard conditions
  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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