Vibrational spectra, force constants and conformations of molecules of trivalent tricoordinated phosphorus compounds

Data on the interpretation of IR and Raman spectra on the basis of calculat ions of normal vibration modes, and on the conformations and force constant s of molecules of trivalent tricoordinated phosporus compounds are summaris ed. Some new correlations between spectra and structures of molecules are p roposed and existing correlations are refined.