Benzene, 1,2-dimethoxy-
- Formula: C8H10O2
- Molecular weight: 138.1638
- IUPAC Standard InChIKey: ABDKAPXRBAPSQN-UHFFFAOYSA-N
- CAS Registry Number: 91-16-7
- 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, o-dimethoxy-; o-Dimethoxybenzene; O,O-Dimethyl catechol; Pyrocatechol dimethyl ether; Veratrol; Veratrole; 1,2-Dimethoxybenzene; Dimethylether pyrokatechinu; Orthodimethoxybenzene; 2-Methoxyanisole; Catechol dimethyl ether; NSC 16934; Methylguaiacol; 1,2-Dimethoxybenzene (veratroI); 1,2-Dimethoxybenzene (veratrole); 1,2-Dimethoxybenzene (Veratrol)
- 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, UV/Visible spectrum, 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:
LLK - Sharon G. Lias, Rhoda D. Levin, and Sherif A. Kafafi
RDSH - Henry M. Rosenstock, Keith Draxl, Bruce W. Steiner, and John T. Herron
LL - Sharon G. Lias and Joel F. Liebman
Quantity | Value | Units | Method | Reference | Comment |
---|---|---|---|---|---|
IE (evaluated) | 7.8 | eV | N/A | N/A | L |
Ionization energy determinations
IE (eV) | Method | Reference | Comment |
---|---|---|---|
7.8 | PE | Domelsmith and Houk, 1978 | LLK |
7.8 ± 0.15 | CTS | Voigt and Reid, 1964 | RDSH |
8.17 | PE | Anderson, Kollman, et al., 1979 | Vertical value; LLK |
7.8 | PE | Domelsmith and Houk, 1978 | Vertical value; LLK |
Appearance energy determinations
Ion | AE (eV) | Other Products | Method | Reference | Comment |
---|---|---|---|---|---|
C6H5+ | 12.7 | CH3+CO+H2O | EI | Mori, Ogawa, et al., 1992 | LL |
C6H7O+ | 12.2 | CH3+CO | EI | Mori, Ogawa, et al., 1992 | LL |
UV/Visible spectrum
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.
Spectrum
Notice: This spectrum may be better viewed with a Javascript and HTML 5 enabled browser.
Additional Data
View image of digitized spectrum (can be printed in landscape orientation).
View spectrum image in SVG format.
Download spectrum in JCAMP-DX format.
Source | Lang (editor), 1972 |
---|---|
Owner | INEP CP RAS, NIST OSRD Collection (C) 2007 copyright by the U.S. Secretary of Commerce on behalf of the United States of America. All rights reserved. |
Origin | INSTITUTE OF ENERGY PROBLEMS OF CHEMICAL PHYSICS, RAS |
Source reference | RAS UV No. 18993 |
Instrument | Unicam SP 800 |
Melting point | 22 |
References
Go To: Top, Gas phase ion energetics data, UV/Visible spectrum, Notes
Data compilation copyright by the U.S. Secretary of Commerce on behalf of the U.S.A. All rights reserved.
Domelsmith and Houk, 1978
Domelsmith, L.N.; Houk, K.N.,
Photoelectron spectroscopic studies of hallucinogens: The use of ionization potentials in QSAR,
NIDA Res. Monogr., 1978, 22, 423. [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]
Anderson, Kollman, et al., 1979
Anderson, G.M., III; Kollman, P.A.; Domelsmith, L.N.; Houk, K.N.,
Methoxy group nonplanarity in o-dimethoxybenzenes. Simple predictive models for conformations and rotational barriers in alkoxyaromatics,
J. Am. Chem. Soc., 1979, 101, 2344. [all data]
Mori, Ogawa, et al., 1992
Mori, Y.; Ogawa, Y.; Shinoda, H.; Kitagawa, T.,
Two competing fragmentation processes in dimethoxybenzenes depending on their positional isomers: Elimination of CH3 and CHnO (n = 1-3) and formation of methoxycyclopentadienyl and protonated phenol ions,
Org. Mass Spectrom., 1992, 27, 578. [all data]
Lang (editor), 1972
Lang (editor), L.,
Absorption Spectra in the Ultraviolet and Visible Region, 1972, 16, 123. [all data]
Notes
Go To: Top, Gas phase ion energetics data, UV/Visible spectrum, 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.