X-Ray Diffuse Scattering from Several Platinum-Atom Chain 1-D Conductors and a Detailed Investigation of the Solid-State Properties of Rb3(H3O)0·2 [Pt(CN)4] (O3SO·H·OSO3)0·5·0.8H2O

X-ray diffuse scattering studies at room temperature for seven one-dimensional metallic complexes are reported. The crystal structure and the temperature dependence of both the electrical conductivity and X-ray diffuse scattering for Rb3(H3O)02 [Pt(CN)4] (O3SOHOSO3)050.8H2O are reported and related to the development of a non-Peierls superstructure below room temperature. The Rb complex is unique in that it contains a polyatomic (> 2) trianion and a ratio of three alkali metal ions per Pt atoms instead of the usual two.