Mesitylene
- Formula: C9H12
- Molecular weight: 120.1916
- IUPAC Standard InChIKey: AUHZEENZYGFFBQ-UHFFFAOYSA-N
- CAS Registry Number: 108-67-8
- 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. - Other names: Benzene, 1,3,5-trimethyl-; s-Trimethylbenzene; 1,3,5-Trimethylbenzene; sym-Trimethylbenzene; Fleet-X; TMB; UN 2325; 2,4,6-Trimethylbenzene; 3,5-Dimethyltoluene; NSC 9273; Trimethylbenzene; Trimethylbenzol; 1,3,5-trimethylbenzene (mesitylene); Trimethylbenzene (Related); Trimethylbenzol (Related)
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Gas phase ion energetics data
Go To: Top, 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:
HL - Edward P. Hunter and Sharon G. Lias
L - Sharon G. Lias
Data compiled as indicated in comments:
MM - Michael M. Meot-Ner (Mautner)
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 C9H12+ (ion structure unspecified)
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 8.40 ± 0.01 | eV | N/A | N/A | L |
Quantity | Value | Units | Method | Reference | Comment |
Proton affinity (review) | 836.2 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Quantity | Value | Units | Method | Reference | Comment |
Gas basicity | 808.6 | kJ/mol | N/A | Hunter and Lias, 1998 | HL |
Proton affinity at 298K
Proton affinity (kJ/mol) | Reference | Comment |
---|---|---|
835.1 | Aue, Guidoni, et al., 2000 | Experimental literature data re-evaluated by the authors using ab initio protonation entropies; MM |
Gas basicity at 298K
Gas basicity (review) (kJ/mol) | Reference | Comment |
---|---|---|
808.8 | Aue, Guidoni, et al., 2000 | Experimental literature data re-evaluated by the authors using ab initio protonation entropies; MM |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
8.41 ± 0.01 | EQ | Lias and Ausloos, 1978 | LLK |
8.46 | CTS | Kobayashi, Kobayashi, et al., 1973 | LLK |
8.2 ± 0.1 | EI | Gilbert, Leach, et al., 1973 | LLK |
8.47 | CTS | Huttner and Fischer, 1967 | RDSH |
8.40 ± 0.01 | PI | Watanabe, Nakayama, et al., 1962 | RDSH |
8.55 | CTS | Kinoshita, 1962 | RDSH |
8.39 ± 0.01 | PI | Price, Bralsford, et al., 1959 | RDSH |
8.41 ± 0.02 | PI | Vilesov and Terenin, 1957 | RDSH |
8.42 | PE | Howell, Goncalves, et al., 1984 | Vertical value; LBLHLM |
8.42 | PE | Cetinkaya, Lappert, et al., 1983 | Vertical value; LBLHLM |
8.45 | PE | Worley and Webb, 1980 | Vertical value; LLK |
8.45 ± 0.05 | PE | Gower, Kane-Maguire, et al., 1977 | Vertical value; LLK |
8.45 ± 0.05 | PE | Evans, Green, et al., 1974 | Vertical value; LLK |
8.65 ± 0.03 | PE | Klessinger, 1972 | Vertical value; LLK |
References
Go To: Top, 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.
Hunter and Lias, 1998
Hunter, E.P.; Lias, S.G.,
Evaluated Gas Phase Basicities and Proton Affinities of Molecules: An Update,
J. Phys. Chem. Ref. Data, 1998, 27, 3, 413-656, https://doi.org/10.1063/1.556018
. [all data]
Aue, Guidoni, et al., 2000
Aue, D.H.; Guidoni, M.; Betowski, L.D.,
Ab initio calculated gas-phase basicities of polynuclear aromatic hydrocarbons,
Int. J. Mass Spectrom., 2000, 201, 283. [all data]
Lias and Ausloos, 1978
Lias, S.G.; Ausloos, P.J.,
eIonization energies of organic compounds by equilibrium measurements,
J. Am. Chem. Soc., 1978, 100, 6027. [all data]
Kobayashi, Kobayashi, et al., 1973
Kobayashi, H.; Kobayashi, M.; Kaizu, Y.,
Molecular complexes of arenetricarbonylchromium,
Bull. Chem. Soc. Jpn., 1973, 46, 3109. [all data]
Gilbert, Leach, et al., 1973
Gilbert, J.R.; Leach, W.P.; Miller, J.R.,
Ionisation appearance potential measurements in arene chromium tricarbonyls,
J. Organomet. Chem., 1973, 49, 219. [all data]
Huttner and Fischer, 1967
Huttner, G.; Fischer, E.O.,
Uber Aromatenkomplexe von Metallen. XCVIII. Spectroskopische Untersuchungen an Charge-Transfer-Komplexen von Aromaten-Chrom Tricarbonylen mit 1,3,5-Trinitrobenzol,
J. Organometal. Chem., 1967, 8, 299. [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]
Kinoshita, 1962
Kinoshita, M.,
The absorption spectra of the molecular complexes of aromatic compounds with p-bromanil,
Bull. Chem. Soc. Japan, 1962, 35, 1609. [all data]
Price, Bralsford, et al., 1959
Price, W.C.; Bralsford, R.; Harris, P.V.; Ridley, R.G.,
Ultra-violet spectra and ionization potentials of hydrocarbon molecules,
Spectrochim. Acta, 1959, 14, 45. [all data]
Vilesov and Terenin, 1957
Vilesov, F.I.; Terenin, A.N.,
The photoionization of the vapors of certain organic compounds,
Dokl. Akad. Nauk SSSR, 1957, 115, 744, In original 539. [all data]
Howell, Goncalves, et al., 1984
Howell, J.O.; Goncalves, J.M.; Amatore, C.; Klasinc, L.; Wightman, R.M.; Kochi, J.K.,
Electron transfer from aromatic hydrocarbons and their π-complexes with metals. Comparison of the standard oxidation potentials and vertical ionization potentials,
J. Am. Chem. Soc., 1984, 106, 3968. [all data]
Cetinkaya, Lappert, et al., 1983
Cetinkaya, B.; Lappert, M.F.; Suffolk, R.J.,
Photoelectron spectra of some sterically hindered phenols and related compounds,
J. Chem. Res. Synop., 1983, 316. [all data]
Worley and Webb, 1980
Worley, S.D.; Webb, T.R.,
The electronic structure of transition-metal carbonyl complexes of norbornadiene and mesitylene,
J. Organomet. Chem., 1980, 192, 139. [all data]
Gower, Kane-Maguire, et al., 1977
Gower, M.; Kane-Maguire, L.A.P.; Maier, J.P.; Sweigart, D.A.,
Ultraviolet photoelectron spectra of cyclohepta-1,3,5-triene and mesitylene tricarbonyl complexes of the group 6A metals,
J. Chem. Soc. Dalton Trans., 1977, 316. [all data]
Evans, Green, et al., 1974
Evans, S.; Green, J.C.; Jackson, S.E.; Higginson, B.,
He(I) photoelectron spectra of some transition-metal sandwich complexes,
J. Chem. Soc. Dalton Trans., 1974, 304. [all data]
Klessinger, 1972
Klessinger, M.,
Ionization potentials of substituted benzenes,
Angew. Chem. Int. Ed. Engl., 1972, 11, 525. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
IE (evaluated) Recommended ionization energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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