Methane, trimethoxy-
- Formula: C4H10O3
- Molecular weight: 106.1204
- IUPAC Standard InChI: InChI=1S/C4H10O3/c1-5-4(6-2)7-3/h4H,1-3H3
- IUPAC Standard InChIKey: PYOKUURKVVELLB-UHFFFAOYSA-N
- CAS Registry Number: 149-73-5
- 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: Orthoformic acid, trimethyl ester; Methyl orthoformate; Orthoformic acid methyl ester; Trimethoxymethane; Trimethyl orthoformate; CH(OCH3)3; Methylester kyseliny orthomravenci; Orthomravencan methylnaty; Trimethylester kyseliny orthomravenci; Methoxymethylal; NSC 147479
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Data at other public NIST sites:
- Options:
Data at NIST subscription sites:
NIST subscription sites provide data under the NIST Standard Reference Data Program, but require an annual fee to access. The purpose of the fee is to recover costs associated with the development of data collections included in such sites. Your institution may already be a subscriber. Follow the links above to find out more about the data in these sites and their terms of usage.
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:
L - Sharon G. Lias
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
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| IE (evaluated) | 9.5 | eV | N/A | N/A | L |
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| ~9.5 | EI | Holmes and Lossing, 1982 | LBLHLM |
| 9.5 | PE | Gan, Peel, et al., 1977 | LLK |
| 10.24 ± 0.07 | PE | Gan, Peel, et al., 1977 | Vertical value; LLK |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| C3H7O2+ | 10.36 ± 0.06 | CH3O | EI | Martin, Lampe, et al., 1966 | RDSH |
| C4H9O3+ | 10.22 | H | EI | Holmes and Lossing, 1982 | LBLHLM |
| C4H9O3+ | 10.39 ± 0.05 | H | EI | Martin, Lampe, et al., 1966 | 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.
Holmes and Lossing, 1982
Holmes, J.L.; Lossing, F.P.,
Towards a general scheme for estimating the heats of formation of organic ions in the gas phase. Part II. The effect of substitution at charge-bearing sites,
Can. J. Chem., 1982, 60, 2365. [all data]
Gan, Peel, et al., 1977
Gan, T.H.; Peel, J.B.; Willett, G.D.,
A comparison of the photoelectron spectra of the trimethyl- and triallylorthoformates,
Chem. Phys. Lett., 1977, 51, 464. [all data]
Martin, Lampe, et al., 1966
Martin, R.H.; Lampe, F.W.; Taft, R.W.,
An electron-impact study of ionization and dissociation in methoxy- and halogen- substituted methanes,
J. Am. Chem. Soc., 1966, 88, 1353. [all data]
Notes
Go To: Top, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy IE (evaluated) Recommended ionization energy - Data from NIST Standard Reference Database 69: NIST Chemistry WebBook
- The National Institute of Standards and Technology (NIST) uses its best efforts to deliver a high quality copy of the Database and to verify that the data contained therein have been selected on the basis of sound scientific judgment. However, NIST makes no warranties to that effect, and NIST shall not be liable for any damage that may result from errors or omissions in the Database.
- Customer support for NIST Standard Reference Data products.