Preparation of some transition metal sulphides

Ternary sulphides, LnMS₃ (Ln=rare earth metal; M=first row transition metal) and MV₂S₄ (M=Mg, Fe, Co, Ni and Zn) have been prepared by the reaction of appropriate ternary metal oxides with H₂S or CS₂/N₂ vapours at elevated temperatures. Chemical analysis and x-ray powder diffraction of the products indicate formation of single-phases with unique crystal structures in many cases. Communication No. 117 from the Solid State and Structural Chemistry Unit.