EFFECT OF HIGH PRESSURE ON VIBRATIONAL SPECTRA OF SQUARE-PLANAR COORDINATION COMPOUNDS

The effect of high pressures (up to 50 kbars)on the molecular vibrations of square-planar coordination compounds of the type MX2L2 (where M = PtII or PdII, X = Cl or Br, and L = (CH3)2S) has been studied over the infrared spectral frequency range, 4000-200 cm-1. Emphasis has been placed on the region containing the molecular vibrations of the ligand and it is shown that certain molecular motions are more sensitive than others to changes in the external pressure, both in terms of frequency shifts and changes in intensity. Conclusions are reached as to the effectiveness of this technique for deducing vibrational assignments. © 1969, American Chemical Society. All rights reserved.