Benzene, 1-methoxy-3-methyl-
- Formula: C8H10O
- Molecular weight: 122.1644
- IUPAC Standard InChI: InChI=1S/C8H10O/c1-7-4-3-5-8(6-7)9-2/h3-6H,1-2H3
- IUPAC Standard InChIKey: OSIGJGFTADMDOB-UHFFFAOYSA-N
- CAS Registry Number: 100-84-5
- 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: Anisole, m-methyl-; m-Cresol methyl ether; m-Methoxytoluene; m-Methylanisole; Methyl m-tolyl ether; 1-Methoxy-3-methylbenzene; 3-Methoxytoluene; 3-Methylanisole; m-Cresyl methyl ether; Methyl m-cresyl ether; Methyl 3-methylphenyl ether; 1-Methyl-3-methoxybenzene; 3-Methylmethoxybenzene; 3-Methyl-1-methoxybenzene; NSC 6255
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Gas phase ion energetics 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 as indicated in comments:
MM - Michael M. Meot-Ner (Mautner)
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 C8H10O+ (ion structure unspecified)
Proton affinity at 298K
| Proton affinity (kJ/mol) | Reference | Comment |
|---|---|---|
| 860. ± 8. | van Beelen, Koblenz, et al., 2004 | T = 298K; PA derived by authors from GB with protonation entropy equated to Rlnσ(B)/σ(BH+); MM |
Gas basicity at 298K
| Gas basicity (review) (kJ/mol) | Reference | Comment |
|---|---|---|
| 828. ± 8. | van Beelen, Koblenz, et al., 2004 | T = 298K; PA derived by authors from GB with protonation entropy equated to Rlnσ(B)/σ(BH+); MM |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 8.0 | PE | Kobayashi and Nagakura, 1974 | LLK |
| 8.4 ± 0.1 | EI | Brown, 1970 | RDSH |
| 8.31 ± 0.05 | EI | Pignataro, Foffani, et al., 1966 | RDSH |
| 8.1 ± 0.15 | CTS | Voigt and Reid, 1964 | RDSH |
| 8.28 | PE | Kobayashi and Nagakura, 1974 | Vertical value; LLK |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| C6H7+ | 12.9 | ? | EI | Harrison, Haynes, et al., 1965 | RDSH |
| C7H7O+ | 11.6 ± 0.1 | CH3 | EI | Brown, 1970 | RDSH |
| C7H7O+ | 11.3 ± 0.1 | CH3 | EI | Tait, Shannon, et al., 1962 | RDSH |
| C7H8+ | 11.2 ± 0.1 | CH2O | EI | Brown, 1970 | RDSH |
| C7H9+ | 11.7 | CO+H? | EI | Harrison, Haynes, et al., 1965 | RDSH |
| C8H9O+ | 12.1 ± 0.1 | H | EI | Meyer and Harrison, 1964 | RDSH |
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.
van Beelen, Koblenz, et al., 2004
van Beelen, E.S.E.; Koblenz, T.A.; Ingemann, S.; Hammerum, S.,
Experimental and theoretical evaluation of proton affinities of furan, the methylphenols, and the related anisoles,
J. Phys. Chem. A, 2004, 108, 2787. [all data]
Kobayashi and Nagakura, 1974
Kobayashi, T.; Nagakura, S.,
Photoelectron spectra of substituted benzenes,
Bull. Chem. Soc. Jpn., 1974, 47, 2563. [all data]
Brown, 1970
Brown, P.,
Kinetic studies in mass spectrometry. VIII. Competing [M-CH3] and [M-CH2O] reactions in substituted anisoles. Approximate activation energies from ionization appearance potentials,
Org. Mass Spectrom., 1970, 4, 519. [all data]
Pignataro, Foffani, et al., 1966
Pignataro, S.; Foffani, A.; Innorta, G.; Distefano, G.,
Molecular structural effects on the ionization potentials for metasubstituted aromatic compounds and for compounds of the type X-CH2-R,
Z. Physik. Chem. (Frankfurt), 1966, 49, 291. [all data]
Voigt and Reid, 1964
Voigt, E.M.; Reid, C.,
Ionization potentials of substituted benzenes and their charge-transfer spectra with tetracyanoethylene,
J. Am. Chem. Soc., 1964, 86, 3930. [all data]
Harrison, Haynes, et al., 1965
Harrison, A.G.; Haynes, P.; McLean, S.; Meyer, F.,
The mass spectra of methyl-substituted cyclopentadienes,
J. Am. Chem. Soc., 1965, 87, 5099. [all data]
Tait, Shannon, et al., 1962
Tait, J.M.S.; Shannon, T.W.; Harrison, A.G.,
The structure of substituted C7 ions from benzyl derivatives at the appearance potential threshold,
J. Am. Chem. Soc., 1962, 84, 4. [all data]
Meyer and Harrison, 1964
Meyer, F.; Harrison, A.G.,
An electron impact study of methyl phenyl ethers,
Can. J. Chem., 1964, 42, 2008. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
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