Vibrational spectra and ring-puckering of 2-cyclopenten-1-ones |
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Authors: | Taina H Chao J Laane |
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Institution: | Department of Chemistry, Texas A&M University, College Station, Texas 77843 USA |
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Abstract: | The mid-infrared, far-infrared, and Raman spectra of 2-cyclopenten-1-one and 2-cyclopenten-1-one-5, 5-d2 have been recorded. Assignments for each of the thirty vibrational fundamentals have been made for the two molecules. Several ring-puckering transitions were observed in the far-infrared spectrum of each molecule. From these were determined potential functions which establish the planarity of the ring system. The potential functions in reduced form derived for the hyride and deuteride are V = 15.0(Z4 + 8.0Z2) cm?1 and V = 14.2(Z4 + 8.8Z2) cm?1, respectively. |
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