Darstellung und Schwingungsspektren der 35Cl/37Cl-markierten Fluoro-Chloro-Platinate(IV) / Preparation and Vibrational Spectra of 35Cl/37Cl Labelled Fluoro-Chloro-Platinates(IV)

Abstract

All components of the two series Cs2[PtF„35Cl6-n] and Cs2[PtFn 37Cl6-n], including the pairs of geometric isomers for n = 2,3, 4, have been prepared and isolated by ion exchange chromatography on DEAE cellulose. The highly resolved low temperature (80 K) IR and Raman spectra of the pure isotopomers show distinctive isotopic shifts for different vibrational modes up to 10 cm-1. The excellent agreement of the observed values with Teller-Redlich calculations verifies the assignment of all stretching and especially of the narrow deformation bands. For transcomplexes containing 35Cl-Pt-37Cl axes, the lowered symmetry affects the restriction of the rule of mutual exclusion