Lattice vibrations and the force field of K2PtCl4, K2PdCl4 and K2PtCl4

Abstract

The far infra-red spectra of K₂PtCl₄, K₂PdCl₄ and K₂PtCl₆ have been measured in the frequency region from 500 to 600 cm⁻¹ and a normal co-ordinate treatment has been made for these compounds on considering the lattice vibrations. It has been shown that the modified Urey-Bradley force field is adequate for K₂PtCl₄. The potential functions between K⁺ ion and Cl atom has been discussed.