Partially oxidised tetracyanoplatinate complexes containing both divalent and monovalent cations

Abstract

A series of new one-dimensional metals based on partially oxidised tetracyanoplatinate complexes containing both monovalent and divalent cations is described. The complexes appear to be isostructural with K2[Pt(CN)4]Cl0.3·3H2O but with ca. 13% of the cation sites containing a divalent cation and with all the halide sites occupied. The small change in composition is shown to have a large effect on the electrical conduction properties of the compounds because the effect of the introduction of divalent cations results in an increased stiffness of the lattice. This leads to a reduction of λ, the electron phonon coupling constant, resulting in increased conductivity at low temperatures.