Cyclohexane, methyl-
- Formula: C7H14
- Molecular weight: 98.1861
- IUPAC Standard InChIKey: UAEPNZWRGJTJPN-UHFFFAOYSA-N
- CAS Registry Number: 108-87-2
- 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. - Isotopologues:
- Other names: Cyclohexylmethane; Hexahydrotoluene; Methylcyclohexane; Sextone B; Toluene hexahydride; Hexahydroxytoluene; Metylocykloheksan; Toluene, hexahydro-; UN 2296; NSC 9391
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Reaction thermochemistry data
Go To: Top, Henry's Law data, Gas phase ion energetics 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: 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 + H2 = C7H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -28.56 ± 0.16 | kcal/mol | Chyd | Rogers, Crooks, et al., 1987 | liquid phase |
ΔrH° | -27.75 ± 0.13 | kcal/mol | Chyd | Turner and Garner, 1958 | liquid phase; solvent: Acetic acid |
ΔrH° | -27.75 ± 0.13 | kcal/mol | Eqk | Turner and Garner, 1957 | liquid phase; solvent: Acetic acid |
ΔrH° | -28.70 ± 0.07 | kcal/mol | Chyd | Turner and Garner, 1957, 2 | liquid phase; solvent: Acetic acid |
By formula: H2 + C7H12 = C7H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -26.63 ± 0.088 | kcal/mol | Chyd | Rogers, Crooks, et al., 1987 | liquid phase |
ΔrH° | -25.41 ± 0.11 | kcal/mol | Chyd | Turner and Garner, 1958 | liquid phase; solvent: Acetic acid |
ΔrH° | -25.41 ± 0.11 | kcal/mol | Chyd | Turner and Garner, 1957 | liquid phase; solvent: Acetic acid |
By formula: 2H2 + C7H10 = C7H14
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
ΔrH° | -92.4 ± 0.1 | kcal/mol | Chyd | Roth, Adamczak, et al., 1991 | liquid phase |
Henry's Law 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: Rolf Sander
Henry's Law constant (water solution)
kH(T) = k°H exp(d(ln(kH))/d(1/T) ((1/T) - 1/(298.15 K)))
k°H = Henry's law constant for solubility in water at 298.15 K (mol/(kg*bar))
d(ln(kH))/d(1/T) = Temperature dependence constant (K)
k°H (mol/(kg*bar)) | d(ln(kH))/d(1/T) (K) | Method | Reference | Comment |
---|---|---|---|---|
0.0097 | 9400. | M | N/A | |
0.0093 | 9100. | X | N/A | |
0.0023 | Q | N/A | missing citation give several references for the Henry's law constants but don't assign them to specific species. | |
0.0025 | L | N/A | ||
0.0023 | V | N/A |
Gas phase ion energetics data
Go To: Top, Reaction thermochemistry data, Henry's Law 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 evaluated as indicated in comments:
L - Sharon G. Lias
Data compiled as indicated in comments:
LL - Sharon G. Lias and Joel F. Liebman
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
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 9.64 ± 0.10 | eV | N/A | N/A | L |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
9.62 ± 0.05 | EI | Holmes and Lossing, 1991 | LL |
9.64 | EQ | Sieck and Mautner(Meot-Ner), 1982 | LBLHLM |
9.64 ± 0.10 | EVAL | Lias, 1982 | LBLHLM |
9.69 ± 0.15 | EQ | Mautner(Meot-Ner), Sieck, et al., 1981 | LLK |
9.76 ± 0.03 | PE | Rang, Paldoia, et al., 1974 | LLK |
9.85 ± 0.03 | PI | Watanabe, Nakayama, et al., 1962 | RDSH |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C6H11+ | 10.95 | CH3 | EI | Pottie, Harrison, et al., 1961 | RDSH |
Mass spectrum (electron ionization)
Go To: Top, Reaction thermochemistry data, Henry's Law data, 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: NIST Mass Spectrometry Data Center, William E. Wallace, director
Spectrum
Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
Due to licensing restrictions, this spectrum cannot be downloaded.
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 | Japan AIST/NIMC Database- Spectrum MS-NW-3722 |
NIST MS number | 227871 |
References
Go To: Top, Reaction thermochemistry data, Henry's Law 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.
Rogers, Crooks, et al., 1987
Rogers, D.W.; Crooks, E.; Dejroongruang, K.,
Enthalpies of hydrogenation of the hexenes,
J. Chem. Thermodyn., 1987, 19, 1209-1215. [all data]
Turner and Garner, 1958
Turner, R.B.; Garner, R.H.,
Heats of hydrogenation. V. Relative stabilities in certain exocyclic-endocyclic olefin pairs,
J. Am. Chem. Soc., 1958, 80, 1424-1430. [all data]
Turner and Garner, 1957
Turner, R.B.; Garner, R.H.,
Heats of hydrogenation. V. Relative stabilities in certain exocyclic-endocyclic olefin pairs,
J. Am. Chem. Soc., 1957, 80, 1424-1430. [all data]
Turner and Garner, 1957, 2
Turner, R.B.; Garner, R.H.,
The stability relationship of 1-methyl-cyclopentene and methylenecyclopentane,
J. Am. Chem. Soc., 1957, 79, 253. [all data]
Roth, Adamczak, et al., 1991
Roth, W.R.; Adamczak, O.; Breuckmann, R.; Lennartz, H.-W.; Boese, R.,
Die Berechnung von Resonanzenergien; das MM2ERW-Kraftfeld,
Chem. Ber., 1991, 124, 2499-2521. [all data]
Holmes and Lossing, 1991
Holmes, J.L.; Lossing, F.P.,
Ionization energies of homologous organic compounds and correlation with molecular size,
Org. Mass Spectrom., 1991, 26, 537. [all data]
Sieck and Mautner(Meot-Ner), 1982
Sieck, L.W.; Mautner(Meot-Ner), M.,
Ionization energies and entropies of cycloalkanes. Kinetics of free energy controlled charge-transfer reactions,
J. Phys. Chem., 1982, 86, 3646. [all data]
Lias, 1982
Lias, S.G.,
Thermochemical information from ion-molecule rate constants,
Ion Cyclotron Reson. Spectrom. 1982, 1982, 409. [all data]
Mautner(Meot-Ner), Sieck, et al., 1981
Mautner(Meot-Ner), M.; Sieck, L.W.; Ausloos, P.,
Ionization of normal alkanes: Enthalpy, entropy, structural, and isotope effects,
J. Am. Chem. Soc., 1981, 103, 5342. [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]
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]
Pottie, Harrison, et al., 1961
Pottie, R.F.; Harrison, A.G.; Lossing, F.P.,
Free radicals by mass spectrometry. XXIV. Ionization potentials of cycloalkyl free radicals and cycloalkanes,
J. Am. Chem. Soc., 1961, 83, 3204. [all data]
Notes
Go To: Top, Reaction thermochemistry data, Henry's Law data, Gas phase ion energetics data, Mass spectrum (electron ionization), References
- Symbols used in this document:
AE Appearance energy IE (evaluated) Recommended ionization energy d(ln(kH))/d(1/T) Temperature dependence parameter for Henry's Law constant k°H Henry's Law constant at 298.15K ΔrH° Enthalpy of reaction at standard conditions - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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