Arsenous acid, trimethyl ester
- Formula: C3H9AsO3
- Molecular weight: 168.0234
- IUPAC Standard InChI: InChI=1S/C3H9AsO3/c1-5-4(6-2)7-3/h1-3H3
- IUPAC Standard InChIKey: JQWDUIXUOQTLKR-UHFFFAOYSA-N
- CAS Registry Number: 6596-95-8
- Chemical structure:
This structure is also available as a 2d Mol file - Other names: Trimethyl arsenite; Arsenious acid (H3AsO3), trimethyl ester; Trimethoxyarsine; As(OCH3)3
- Permanent link for this species. Use this link for bookmarking this species for future reference.
- Information on this page:
- Other data available:
- Options:
Phase change 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: William E. Acree, Jr., James S. Chickos
| Quantity | Value | Units | Method | Reference | Comment |
|---|---|---|---|---|---|
| ΔvapH° | 10.1 ± 0.31 | kcal/mol | N/A | Charnley, Mortimer, et al., 1953 | Based on data from 300. to 335. K. See also Cox and Pilcher, 1970. |
Gas phase ion energetics data
Go To: Top, Phase change 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: Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
Ionization energy determinations
| IE (eV) | Method | Reference | Comment |
|---|---|---|---|
| 7.93 | EI | Preiss, 1974 | |
| 9.73 | PE | Cowley, Lattman, et al., 1977 | Vertical value |
Appearance energy determinations
| Ion | AE (eV) | Other Products | Method | Reference | Comment |
|---|---|---|---|---|---|
| CH2OAs+ | 13.88 | ? | EI | Preiss, 1974 | |
| CH3OAs+ | 10.63 | ? | EI | Preiss, 1974 | |
| CH4OAs+ | 13.48 | ? | EI | Preiss, 1974 | |
| C2H5O2As+ | 8.98 | CH3OH | EI | Preiss, 1974 | |
| C2H6O2As+ | 10.03 | CH3O | EI | Preiss, 1974 | |
| C2H7O2As+ | 8.80 | CH2O | EI | Preiss, 1974 |
References
Go To: Top, Phase change 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.
Charnley, Mortimer, et al., 1953
Charnley, T.; Mortimer, C.T.; Skinner, H.A.,
236. The thermochemistry of organo-arsenic compounds. Part II. Esters of arsenious acid,
J. Chem. Soc., 1953, 1181, https://doi.org/10.1039/jr9530001181
. [all data]
Cox and Pilcher, 1970
Cox, J.D.; Pilcher, G.,
Thermochemistry of Organic and Organometallic Compounds, Academic Press Inc., London, 1970, 643. [all data]
Preiss, 1974
Preiss, H.,
Die Massenspektren einiger arsen- und arsenigsaureester. Kinetische untersuchung ihres fragmentierungsverhaltens,
Z. Anorg. Allg. Chem., 1974, 404, 175. [all data]
Cowley, Lattman, et al., 1977
Cowley, A.H.; Lattman, M.; Montag, R.A.; Verkade, J.G.,
The coordination behavior of acyclic phosphites; a UV photoelectron spectroscopic study,
Inorg. Chim. Acta, 1977, 25, 151. [all data]
Notes
Go To: Top, Phase change data, Gas phase ion energetics data, References
- Symbols used in this document:
AE Appearance energy ΔvapH° Enthalpy of vaporization at standard conditions - 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.