The crystal structures of PbO.PbXO4 (X = S, Cr, Mo) at 5K by neutron powder profile refinement

Abstract The structures of PbO.PbXO 4 monobasic lead oxide- lead sulphate, chromate and molybdate have been determined at 5K by neutron powder profile refinement. They are all isostructural with Lanarkite (the sulphate), being based on the red PbO structure with PbO 2 2− and its lone pair electrons replaced by XO 4 2− . A similar mechanism apparently produces the di-basic and tetra-basic oxides nPbO.PbXO 4 . These materials are of relevence to solid state reactions in lead — acid battery electrodes.