T2N IN4. EVIDENCE OF RING PUCKERING IN DEUTERATED ANALOGUES OF TRIMETHYLENE SULFIDE
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Date
1973
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Ohio State University
Abstract
The far-infrared spectra of several deuterated analogues of trimethylene sulfide $(\alpha-d_{2},\beta-d_{2},\alpha,\alpha ^{\prime} - d_{4}$ and $d_{6}) $ have been measured in the vapor phase, all showing the usual sequence of Q-branches arising from transitions between ring puckering energy states. The isotopic dependence of the double minimum potential function governing the out-of-plane motion will be discussed briefly. Several combination band progressions resulting from ring puckering-vibrational interactions, notably in the $CH_{2}$ scissoring region, are reported. It is found that for some vibrationally excited states the puckering potential function does change appreciably from its form in the ground state.
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Author Institution: Department of Chemistry, The University of Calgary Calgary, Alberta