VIBRATIONAL SPECTRA OF 1,2- AND 1,3-DIMETHYLENECYCLO-BUTANE
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Date
1971
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Ohio State University
Abstract
Infrared spectra have been obtained from 33 to $4000 cm^{-1}$ for 1, 2- and 1, 3- dimethylenecyclobutane in the gaseous and the solid ($-196^{\circ} C$) states. Raman spectra have been measured for the solids at low temperature, and also for the liquids so that depolarizations could be obtained. The vibrational data for 1, 3-dimethylenecyclobutane show that it is planar and has molecular symmetry $D_{\pm}$. Frequencies can be assigned to 33 of the 34 spectroscopically active fundamentals. Identifying the correct molecular point group for 1, 2-dimethylenecyelobutane is some what more difficult because of its lower symmetry, but the data conform quite well to $C_{2}$.
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Author Institution: Department of Chemistry, University of Pittsburgh