Metallkomplexe der Phosphinsäuren, XVI [1]. cis-trans-Isomerie bei planaren Palladiumund Platinkomplexen [RR′ PS2]2M [2] / Metal Complexes of Phosphinic Acids, XVI [1]. cis-trans Isomers of Planar Palladium and Platinum Complexes [RR'PS2]2M [2]

Abstract

Unsymmetrically substituted dithiophosphinic acids RR'P(S)SH give planar metal chelates [RR'PS2]2M 1 [M = Pd(II), Pt(II)]. It can be shown by comparison of their 31P-{1H} NMR spectra with those of symmetrically substituted compounds [R2PS2]2M that in the synthesis of 1 equimolar mixtures of the cis and trans isomers are formed.