Preparation, crystal structures, experimental and theoretical electronic band structures of cobalt tellurides in the composition range

Abstract

Cobalt tellurides in the composition range crystallize in a -type structure with short intra- and interslab Te-Te contacts indicating a polymeric network with multiple Te-Te bonds explaining the very low values of 1.38 to 1.41 of the hexagonal cells. Single-crystal x-ray investigations performed on confirm the marcasite-type structure in the centrosymmetric space group Pnnm.