Cyclohexene, 3-methyl-
- Formula: C7H12
- Molecular weight: 96.1702
- IUPAC Standard InChIKey: UZPWKTCMUADILM-UHFFFAOYSA-N
- CAS Registry Number: 591-48-0
- 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. - Stereoisomers:
- Other names: 3-Methyl-1-cyclohexene; 3-Methylcyclohexene; 3-Methylcyclohex-1-ene; 3-Methylcyclohexene-1
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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: 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
By formula: C7H12 = C7H12
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -8.1 ± 0.3 | kJ/mol | Eqk | Yursha, Kabo, et al., 1974 | gas phase; Heat of isomerization at 463 K |
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:
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 C7H12+ (ion structure unspecified)
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.89 ± 0.01 | PE | Rang, Paldoia, et al., 1974 | LLK |
8.94 ± 0.03 | EI | Winters and Collins, 1968 | RDSH |
9.12 | PE | Brown, Buschek, et al., 1983 | Vertical value; LBLHLM |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C3H3+ | 13.85 ± 0.08 | ? | EI | Winters and Collins, 1968 | RDSH |
C3H5+ | 13.29 ± 0.11 | ? | EI | Winters and Collins, 1968 | RDSH |
C4H5+ | 13.42 ± 0.07 | ? | EI | Winters and Collins, 1968 | RDSH |
C4H6+ | 10.94 ± 0.04 | ? | EI | Winters and Collins, 1968 | RDSH |
C4H7+ | 11.22 ± 0.05 | ? | EI | Winters and Collins, 1968 | RDSH |
C5H7+ | 10.43 ± 0.05 | C2H5 | EI | Winters and Collins, 1968 | RDSH |
C5H8+ | 10.50 ± 0.04 | C2H4 | EI | Winters and Collins, 1968 | RDSH |
C6H9+ | 10.20 | CH3 | EI | Lossing and Holmes, 1984 | LBLHLM |
C6H9+ | 9.98 ± 0.07 | CH3 | EI | Winters and Collins, 1968 | RDSH |
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.
Yursha, Kabo, et al., 1974
Yursha, I.A.; Kabo, G.Ya.; Andreevskii, D.N.,
Equilibriums and thermodynamics of the isomerization of methylcyclohexenes,
Neftekhimiya, 1974, 14, 688-693. [all data]
Rang, Paldoia, et al., 1974
Rang, S.; Paldoia, P.; Talvari, A.,
Ionization potentials of unsaturated hydrocarbons. 2. Mono-substituted cyclopentenes and cyclohexenes,
Eesti. NSV Tead. Akad. Toim., 1974, 354. [all data]
Winters and Collins, 1968
Winters, R.E.; Collins, J.H.,
Mass spectrometric studies of structural isomers. I. Mono- and bicyclic C7H12 molecules,
J. Am. Chem. Soc., 1968, 90, 1235. [all data]
Brown, Buschek, et al., 1983
Brown, R.S.; Buschek, J.M.; Kopecky, K.R.; Miller, A.J.,
Photoelectron spectra of syn- and anti-sesquinorbornene. Evidence for vertical Σ-π delocalization in bicyclo[2.2.1]heptene,
J. Org. Chem., 1983, 48, 3692. [all data]
Lossing and Holmes, 1984
Lossing, F.P.; Holmes, J.L.,
Stabilization energy and ion size in carbocations in the gas phase,
J. Am. Chem. Soc., 1984, 106, 6917. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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