Torsional Motion in Aromatic Molecules. Conformational Analysis of Methyl-, Ethyl, and n-Propylbenzenes.
Abstract
Supersonic molecular jet spectroscopy is used to obtain information on the torsional motion in methyl, ethyl and n propyl substituted benzenes. Dispersed emission and time of flight mass spectral results are evaluated for toluene, the three xylenes, diethylbenzene and normal propyltoluene. The aromatic ring methyl groups in meta and paraxylene can be considered as independent free rotors while in o-xylene they are considerably more hindered in these two states and cross kinetic and potential terms must be introduced. The two conformations of diethylbenzene (syn and anti, with the ethyl groups perpendicular to the plane of the benzene ring) and the three conformations of the propyl group in propyltoluene (anti, syn-gauche and anti-gauche) are observed.
Document Details
- Document Type
- Technical Report
- Publication Date
- May 01, 1987
- Accession Number
- ADA182516
Entities
People
- Elliot R. Bernstein
- J. A. Warren
- J. I. Seeman
- P. J. Breen
Organizations
- Colorado State University