Benzene, (iodomethyl)-

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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

Quantity Value Units Method Reference Comment
Δfgas30.43 ± 0.32kcal/molEqkWalsh, Golden, et al., 1966 

Gas phase ion energetics data

Go To: Top, Gas phase 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 compiled as indicated in comments:
B - John E. Bartmess
LL - Sharon G. Lias and Joel F. Liebman
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

IE (eV) Method Reference Comment
8.73 ± 0.02PITraeger and Kompe, 1990LL
8.8EIYeo and Williams, 1970RDSH
8.91PESchmidt and Schweig, 1973Vertical value; LLK

Appearance energy determinations

Ion AE (eV) Other Products MethodReferenceComment
C7H7+8.84 ± 0.02IPITraeger and Kompe, 1990LL
C7H7+9.2IEIYeo and Williams, 1970RDSH

De-protonation reactions

C7H6I- + Hydrogen cation = Benzene, (iodomethyl)-

By formula: C7H6I- + H+ = C7H7I

Quantity Value Units Method Reference Comment
Δr371.8 ± 2.1kcal/molG+TSPoutsma, Nash, et al., 1997gas phase; between tBuCH(Me)OH, FCH2CH2OH; B
Quantity Value Units Method Reference Comment
Δr364.5 ± 2.0kcal/molIMRBPoutsma, Nash, et al., 1997gas phase; between tBuCH(Me)OH, FCH2CH2OH; B

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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Owner NIST Mass Spectrometry Data Center
Collection (C) 2014 copyright by the U.S. Secretary of Commerce
on behalf of the United States of America. All rights reserved.
Origin ALPHA Chemicals / NIST MS Data Center.
NIST MS number 125335

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References

Go To: Top, Gas phase 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.

Walsh, Golden, et al., 1966
Walsh, R.; Golden, D.M.; Benson, S.W., The thermochemistry of the Gas Phase Equilibrium I2 + C6H5CH3 = C6H5CH2I + HI and the heat of formation of the benzyl radical, J. Am. Chem. Soc., 1966, 88, 650-656. [all data]

Traeger and Kompe, 1990
Traeger, J.C.; Kompe, B.M., Threshold C7H7 formation from the benzyl halides by photoionization mass spectrometry, Int. J. Mass Spectrom. Ion Processes, 1990, 101, 111. [all data]

Yeo and Williams, 1970
Yeo, A.N.H.; Williams, D.H., Rearrangement in the molecular ions of halogenotoluenes prior to fragmentation in the mass spectrometer, Chem. Commun., 1970, 886. [all data]

Schmidt and Schweig, 1973
Schmidt, H.; Schweig, A., C-Hal hyperkonjugation, Tetrahedron Lett., 1973, 981. [all data]

Poutsma, Nash, et al., 1997
Poutsma, J.C.; Nash, J.J.; Paulino, J.A.; Squires, R.R., Absolute Heats of Formation of Phenylcarbene and Vinylcarbene, J. Am. Chem. Soc., 1997, 119, 20, 4686, https://doi.org/10.1021/ja963918s . [all data]


Notes

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