VIBRATIONAL CIRCULAR DICHROISM OF (R)-(+)-3-METHYLCYCLOPENTANONE

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1985

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Ohio State University

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The vibrational circular dichroism (VCD) spectra of (R)-(+)-3-methylcyclopentanone and its $2,2,5,5-d_{4}$ derivative in $CCl_{4}$ solution have been measured in the C-H and C-D stretching regions. The deuterated species shows a large $(|R| \sim 70 \times 10^{-45} esu^{2} cm^{2})$ bisignate VCD spectrum in the C-D stretching region. Attempts to account for these data by coupling among only four erstwhile degenerate C-D stretching modes fails. The data are better accounted for by more complex descriptions of the nuclear motions and attendant electronic charge flows that involve additional moieties, e.g. the carbonyl group.

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Author Institution: Department of Chemistry, University of Minnesota; Lockheed Palo Alto Research Laboratories, University of Minnesota

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