ROTATIONAL ISOMERISM OF UNBRANCHED 1-ALKENES BY INFRARED SPECTRA
Abstract
The IR spectra of the 1-alkenes from 1-butene to 1-hexadecene together with the spectra of 3 bromo-, 3 iodo-, and 3 cyanpropene were studied over the range from 1/4000 to 1/240 cm. The spectra of the crystalline solid states of some of the igher 1-alkenes in the range 1/700 to 1/500 cm are shown and in conjunction with the corresponding liquid state spectra indicate the presence of rotational isomerism about the carbon-carbon bond in the 1-alkenes. The potentials for rotation about the 2,3 carbon-carbon bond are derived from the observed spectra together with an empirical relationship for hydrogen-hydrogen steric interactions. The fundamental vibrational assignment was made f r 1-butene and the IR spectrum of the vapor interpreted on the basis of this assignment. The cell used to obtain the solid state spectra of t e 1-alkenes is described in detail. (Author)
Document Details
- Document Type
- Technical Report
- Publication Date
- Mar 01, 1961
- Accession Number
- AD0270877
Entities
People
- Larry A. Harrah