Electrical Conductivity and Some Other Properties of the Partially Oxidized Salt of the Magnus Green Salt with the Formula Pt6(NH3)10Cl10(HSO4)4

Abstract

The partially oxidized salt of the Magnus green salt with the formula Pt 6 (NH 3 ) 10 Cl 10 (HSO 4 ) 4 was investigated as one-dimensional conductor. Results of the powder X-ray analysis are consistent with a chain structure proposed by Gitzel et al. The electrical conductivity shows a sharp peak between 190 and 200 K with peak value extending over 10 -1 ∼10 -4 \(\varOmega^{-1}\)cm -1 depending on samples. The metal-semiconductor transition thus found is much less gradual than those in KCP and NMP-TCNQ. In one of our samples, another transition from semiconductor to metal on cooling takes place at about 250 K.