The crystal structure of [Sm(H2O)5][Ru2(bpy)2(CN)7]·11H2O, a novel mixed d–f coordination polymer

This communication describes the crystal structure of the mixed-metal coordination polymer {[Sm(H2O)5][Ru(CN)3(bpy)-(μ-CN)-Ru(CN)3(bpy)]·11H2O}∞, which was isolated in low yield from co-crystallisation of K2[Ru(bpy)(CN)4] with Sm(NO3)3·6H2O. This polymeric chain extends along the a-axis and is constructed from cyanide ligands bridging Ru and Sm metal vertices; it contains both hydrophobic and hydrophilic channels, the latter filled with an H-bonded network of water molecules.