Benzene, iodo-

• Formula: C₆H₅I
• Molecular weight: 204.0084
• IUPAC Standard InChI: InChI=1S/C6H5I/c7-6-4-2-1-3-5-6/h1-5H Copy

  
• IUPAC Standard InChIKey: SNHMUERNLJLMHN-UHFFFAOYSA-N Copy
• CAS Registry Number: 591-50-4
• 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: Benzene iodide; Iodobenzene; Phenyl iodide
• 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
  • IR Spectrum
  • Mass spectrum (electron ionization)
  • UV/Visible spectrum
  • References
  • Notes
• Other data available:
  • Condensed phase thermochemistry data
  • Phase change data
  • Henry's Law data
  • Ion clustering data
  • Gas Chromatography
• Data at other public NIST sites:
  • Gas Phase Kinetics Database
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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 by: Hussein Y. Afeefy, Joel F. Liebman, and Stephen E. Stein

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

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

C₆H₇N⁺ +  = (C₆H₇N⁺ • )

By formula: C₆H₇N⁺ + C₆H₅I = (C₆H₇N⁺ • C₆H₅I)

Bond type: Charge transfer bond (positive ion)

Free energy of reaction

 +  = ( • )

By formula: Cl^- + C₆H₅I = (Cl^- • C₆H₅I)

Free energy of reaction

 +  =  + 

By formula: HI + C₆H₅I = C₆H₆ + I₂

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:
L - Sharon G. Lias

Data compiled as indicated in comments:
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

Ionization energy determinations

Appearance energy determinations

IR Spectrum

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Data compiled by: Coblentz Society, Inc.

• SOLUTION (10% CCl4 FOR 3800-1430, 10% CS2 FOR 1430-450 CM^-1); DOW KBr FOREPRISM-GRATING; DIGITIZED BY COBLENTZ SOCIETY (BATCH I) FROM HARD COPY; 2 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, Eugeny B. Stern, Antonina A. Goncharova, Natalia A. Messineva, Natalia V. Trusova, Margarita V. Efimkina

Spectrum

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Additional Data

References

Go To: Top, Gas phase thermochemistry data, 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.

Smith, 1956
Smith, L., Corrected heats of combustion of organic iodine compounds, Acta Chem. Scand., 1956, 10, 884-886. [all data]

Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G., Thermochemistry of Organic and Organometallic Compounds, Academic Press, New York, 1970, 1-636. [all data]

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]

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]

Graham, Nichol, et al., 1955
Graham, W.S.; Nichol, R.J.; Ubbelohde, A.R., A thermochemical evaluation of bond strengths in some carbon compounds. Part III. Bond strengths based on the reactions: (a) Ph·CH₂I + HI=Ph·CH₃ + I₂ and (b) PhI + HI=PhH + I₂, J. Chem. Soc., 1955, 115-121. [all data]

Fujisawa, Ohno, et al., 1986
Fujisawa, S.; Ohno, K.; Masuda, S.; Harada, Y., Penning ionization electron spectroscopy of monohalogenobenzenes: C₆H₅F, C₆H₅Cl, C₆H₅Br, and C₆H₅I, J. Am. Chem. Soc., 1986, 108, 6505. [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]

Dannacher, Rosenstock, et al., 1983
Dannacher, J.; Rosenstock, H.M.; Buff, R.; Parr, A.C.; Stockbauer, R.L.; Bombach, R.; Stadelmann, J.-P., Benchmark measurement of iodobenzene ion fragmentation rates, Chem. Phys., 1983, 75, 23. [all data]

Kimura, Katsumata, et al., 1981
Kimura, K.; Katsumata, S.; Achiba, Y.; Yamazaki, T.; Iwata, S., Ionization energies, Ab initio assignments, and valence electronic structure for 200 molecules in Handbook of HeI Photoelectron Spectra of Fundamental Organic Compounds, Japan Scientific Soc. Press, Tokyo, 1981. [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]

Baldwin, Loudon, et al., 1976
Baldwin, M.A.; Loudon, A.G.; Maccoll, A.; Webb, K.S., The nature and fragmentation pathways of the molecular ions of some arylureas, arylthioureas, acetanilides, thioacetanilides and related compounds, Org. Mass Spectrom., 1976, 11, 1181. [all data]

Baer, Tsai, et al., 1976
Baer, T.; Tsai, B.P.; Smith, D.; Murray, P.T., Absolute unimolecular decay rates of energy selected metastable halobenzene ions, J. Chem. Phys., 1976, 64, 2460. [all data]

Boschi and Salahub, 1974
Boschi, R.A.A.; Salahub, D.R., The high resolution photoelectron spectra of some iodoalkanes, iodocycloalkanes, iodoalkenes, and fluoroiodohydrocarbons, Can. J. Chem., 1974, 52, 1217. [all data]

Sergeev, Akopyan, et al., 1970
Sergeev, Yu.L.; Akopyan, M.E.; Vilesov, F.I.; Kleimenov, V.I., Photoionization processes in phenyl halides, Opt. i Spektroskopiya, 1970, 29, 119, In original 63. [all data]

Momigny, Goffart, et al., 1968
Momigny, J.; Goffart, C.; D'Or, L., Photoionization studies by total ionization measurements. I. Benzene and its monohalogeno derivatives, Intern. J. Mass Spectrom. Ion Phys., 1968, 1, 53. [all data]

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

Potts, Lyus, et al., 1980
Potts, A.W.; Lyus, M.L.; Lee, E.P.F.; Fattahallah, G.H., High resolution ultraviolet photoelectron spectra of C₆H₅X and p-C₆H₄X₂ where X = Cl, Br or I, J. Chem. Soc. Faraday Trans. 2, 1980, 76, 556. [all data]

Sell and Kupperman, 1978
Sell, J.A.; Kupperman, A., Angular distributions in the photoelectron spectra of benzene and its monohalogenated derivatives, Chem. Phys., 1978, 33, 367. [all data]

Malinovich and Lifshitz, 1986
Malinovich, Y.; Lifshitz, C., Time-dependent mass spectra and breakdown graphs. 7. Time-resolved photoionization mass spectrometry of iodobenzene. The heat of formation of C₆H₅⁺, J. Phys. Chem., 1986, 90, 2200. [all data]

Lifshitz and Malinovich, 1984
Lifshitz, C.; Malinovich, Y., Time resolved photoionization mass spectrometry in the millisecond range, Int. J. Mass Spectrom. Ion Processes, 1984, 60, 99. [all data]

Gefen and Lifshitz, 1984
Gefen, S.; Lifshitz, C., Time-dependent mass spectra and breakdown graphs. V. The kinetic shift in iodobenzene, Int. J. Mass Spectrom. Ion Processes, 1984, 58, 251. [all data]

Dunbar and Honovich, 1984
Dunbar, R.C.; Honovich, J.P., Threshold ion photodissociation. Bromobenzene and iodobenzene ions, Int. J. Mass Spectrom. Ion Processes, 1984, 58, 25. [all data]

Burgers and Holmes, 1984
Burgers, P.C.; Holmes, J.L., Fragmentation rate constants and appearance energies for reactions having a large kinetic shift and the energy partitioning in their metastable decomposition, Int. J. Mass Spectrom. Ion Processes, 1984, 58, 15. [all data]

Burgers and Holmes, 1982
Burgers, P.C.; Holmes, J.L., Metastable ion studies. XIII. The measurement of appearance energies of metastable peaks, Org. Mass Spectrom., 1982, 17, 123. [all data]

Johnstone and Mellon, 1972
Johnstone, R.A.W.; Mellon, F.A., Electron-impact ionization and appearance potentials, J. Chem. Soc. Faraday Trans. 2, 1972, 68, 1209. [all data]

Howe and Williams, 1969
Howe, I.; Williams, D.H., Calculation and qualitative predictions of mass spectra. Mono- and paradisubstituted benzenes, J. Am. Chem. Soc., 1969, 91, 7137. [all data]

Notes

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

• Symbols used in this document:
  

  AE	Appearance energy
  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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