Abstract

Raman spectra of cyclopropyl cyanide-a-d1 (CPCN-d) in its condensed phases were recorded, along with the solid-phase Raman spectrum of the parent compd., cyclopropyl cyanide (CPCN). In addn., liq.- and solid-phase IR spectra were obtained for the isotopic deriv., and gas-phase Fourier transform IR spectra were obtained for both compds. The data for CPCN-d, combined with information deduced from gas-phase IR band contours and Raman depolarization ratios, enable vibrational assignments to be proposed for 47 of the 48 normal modes of these 2 mols. Strong mixing of several modes in CPCN is revealed by the D labeling, and evidence for self-assocn. in the condensed phases is discussed. The vibrational frequencies and assignments are compared with similar results for other cyanide- and halogen-substituted cyclopropanes.