Benzene, 1-iodo-3-methyl-
- Formula: C7H7I
- Molecular weight: 218.0350
- IUPAC Standard InChIKey: VLCPISYURGTGLP-UHFFFAOYSA-N
- CAS Registry Number: 625-95-6
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Toluene, m-iodo-; m-Iodotoluene; m-Methyliodobenzene; 3-Iodotoluene; 1-Iodo-3-methylbenzene; 1-Methyl-3-iodobenzene
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Reaction thermochemistry data
Go To: Top, 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: John E. Bartmess
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
C7H6I- + =
By formula: C7H6I- + H+ = C7H7I
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 372.1 ± 3.1 | kcal/mol | G+TS | Wenthold, Wierschke, et al., 1994 | gas phase; Between MeCN and FCH2CH2OH |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 365.0 ± 3.0 | kcal/mol | IMRB | Wenthold, Wierschke, et al., 1994 | gas phase; Between MeCN and FCH2CH2OH |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry 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 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
LL - Sharon G. Lias and Joel F. Liebman
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.6 ± 0.1 | EI | Tajima and Tsuchiya, 1972 | LLK |
8.61 ± 0.03 | PI | Watanabe, Nakayama, et al., 1962 | RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C5H5+ | 14.5 ± 0.2 | C2H2+I | EI | Tajima and Tsuchiya, 1973 | LLK |
C5H5+ | 14.47 ± 0.15 | ? | EI | Tajima and Tsuchiya, 1972 | LLK |
C7H7+ | 10.3 ± 0.20 | I | PI | Dunbar, Honovich, et al., 1988 | LL |
C7H7+ | 11.0 ± 0.3 | ? | EI | McLafferty and Winkler, 1974 | LLK |
C7H7+ | 11.3 ± 0.1 | ? | EI | Tajima and Tsuchiya, 1972 | LLK |
C7H7+ | 11.3 | I | EI | Yeo and Williams, 1970 | RDSH |
De-protonation reactions
C7H6I- + =
By formula: C7H6I- + H+ = C7H7I
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | 372.1 ± 3.1 | kcal/mol | G+TS | Wenthold, Wierschke, et al., 1994 | gas phase; Between MeCN and FCH2CH2OH; B |
Quantity | Value | Units | Method | Reference | Comment |
ΔrG° | 365.0 ± 3.0 | kcal/mol | IMRB | Wenthold, Wierschke, et al., 1994 | gas phase; Between MeCN and FCH2CH2OH; B |
References
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Wenthold, Wierschke, et al., 1994
Wenthold, P.G.; Wierschke, S.G.; Nash, J.J.; Squires, R.R.,
Biradical thermochemistry from collision-induced dissociation threshold energy measurements .2. Experimental and theoretical studies of the Mechanism and Thermochemistry of Formation of alph,
J. Am. Chem. Soc., 1994, 116, 16, 7378, https://doi.org/10.1021/ja00095a048
. [all data]
Tajima and Tsuchiya, 1972
Tajima, S.; Tsuchiya, T.,
The effects of the repeller voltage and the shield voltage on appearance potential measurements by electron impact,
Shitsuryo Bunseki, 1972, 20, 117. [all data]
Watanabe, Nakayama, et al., 1962
Watanabe, K.; Nakayama, T.; Mottl, J.,
Ionization potentials of some molecules,
J. Quant. Spectry. Radiative Transfer, 1962, 2, 369. [all data]
Tajima and Tsuchiya, 1973
Tajima, S.; Tsuchiya, T.,
Energetics consideration of C5H5+ ions produced from various precursors by electron impact,
Bull. Chem. Soc. Jpn., 1973, 46, 3291. [all data]
Dunbar, Honovich, et al., 1988
Dunbar, R.C.; Honovich, J.P.; Asamoto, B.,
Photodissociation thermochemistry as a probe of halotoluene ion potential surfaces,
J. Phys. Chem., 1988, 92, 6935. [all data]
McLafferty and Winkler, 1974
McLafferty, F.W.; Winkler, J.,
Gaseous tropylium, benzyl, tolyl, and norbornadienyl cations,
J. Am. Chem. Soc., 1974, 96, 5182. [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]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, 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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