The infrared (3300-30 cm-1) spectra of gaseous and solid cyclopropylchlorosilane, c- C3H5SiH2Cl, have been recorded. Additionally, the Raman spectra (3200-30 cm-1) of the liquid and solid have been recorded and quantitative depolarization values obtained. Both the cis and gauche conformers have been identified in the fluid phases but only the gauche conformer remains in the solid. Variable-temperature (-55 to-100° C) studies of the ...