Synthetic Copper Monophosphate

Abstract

Cu 9 O 2 (PO 4 ) 4 (OH) 2 belongs to the monophosphate group and contains five kinds of copper coordination polyhedron. One Cu atom is at the center of symmetry and has square-planar coordination, the others occupy distorted square-pyramidal sites. Three kinds of copper-oxygen polyhedra are connected to each other by edge sharing to form zigzag double chains along [110] and these chains are connected by PO 4 tetrahedra to form sheets parallel to (110). H atoms are connected to O atoms, which are shared by three copper polyhedra, to form hydroxyl ions. H atoms are also connected to O atoms shared by both Cu and P polyhedra to form hydrogen bonds.