Abstract
The structure of Pb2HgCrO6 (space group P) can be described as consisting of isolated [CrO4]2− tetrahedra and nearly linear [HgO2]2− dumb-bells, which form layers of composition [HgCrO6]4−. These are intercalated with corrugated pseudo-hexagonal Pb2+ layers. The Pb2+ cation is stereochemically active and has coordination 3+5.
