The infrared and Raman spectra of P(CCH)3, As(CCH)3 and Sb(CCH)3

Abstract Infrared spectra from 35 to 4000 cm −1 have been measured for P(CCH) 3 , As (CCH) 3 , and Sb(CCH) 3 in the vapor and solution phases. Raman spectra with polarisations were obtained for solutions. C 3 v symmetry wan assumed, and permitted a satisfactory interpretation of the data. Frequencies have been assigned to 38 of the 42 spectroscopically-active fundamentals.