# LATTICE VIBRATIONS OF PHOSPHONIUM CHLORIDE AND PHOSPHONIUM CHLORIDE-$d_{1}$ AND THE BARRIER TO TORSIONAL OSCILLATION.

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 Title: LATTICE VIBRATIONS OF PHOSPHONIUM CHLORIDE AND PHOSPHONIUM CHLORIDE-$d_{1}$ AND THE BARRIER TO TORSIONAL OSCILLATION. Creators: Pate, C. B.; Antion, D. J.; Durig, J. R. Issue Date: 1969 Abstract: The infrared spectra of polycrystalline $PH_{4}Cl$ and $PD_{4}Cl$ have been recorded from $33 cm^{-1}$ to $4000 cm^{-1}$ at $-170^{\circ}C$. Raman spectra of the two compounds were also obtained on poly-crystalline samples at the same temperature. Three external modes were observed: an infrared active translation at $140 cm^{-1}$, a Raman active translation at $114 cm^{-1}$ and a Raman active libration at $370 cm^{-1}$. Eight internal modes were also assigned. The barrier to torsional oscillation of the phosphonium ions was calculated from the Raman active libration and was found to be 8.5 kcal/mole for both $PH_{4}$ and $PD_{4}$ ions. URI: http://hdl.handle.net/1811/15687 Other Identifiers: 1969-D-8