A novel framework type for inorganic clusters with cyanide ligands: Crystal structures of Cs2Mn3[Re6Se8(CN)6]2·15H2O and (H3O)2Co3[Re6Se8(CN)6]2·14.5H2O

Abstract

Large cavities occupied by cations and water molecules are part of the polymeric inorganic cluster structure made up of [Re6Se8(CN)6]4- and M2+ ions (M = Mn, Co; see structure on the right). Remarkably, the water molecules play an essential role in the stabilization of the structure: When the cluster is heated to 80-160°C, water is lost irreversibly, and a sharp change in structure is observed.