Raman and infrared spectra of solid benzyl alcohol and two partially d
euterated homologues are reported for the first time. The internal vib
rational modes and lattice modes of benzyl alcohol are assigned on the
basis of isotopic wavenumber shifts. The spectra of solid benzyl alco
hol at low temperatures are shown to be consistent with an ordered non
-centrosymmetric structure, with at least four molecules in the unit c
ell.