The hydrothermal synthesis and structure of a one-dimensional Fe(II)molybdophosphate

A new one-dimensional Fe(II)molybdophosphate of the formula, [(C10H8N2)H2]2[Fe4(II)Mo12(V)(HPO4)6(PO4)2(H2O)8(OH)6O24]·8H2O, (1), has been synthesized by employing hydrothermal methods and characterized by single crystal X-ray diffraction. The structure consists of a network of MO6 (M = Fe, Mo) octahedra and (H)PO4 tetrahedra linked through their vertices. The connectivity between the polyhedral units gives rise to one-dimensional chains with eight-membered apertures. The hydrogen bonded interactions between the chains form pseudo two-dimensional layers. Extensive hydrogen bonding also exists between the amine molecule, 4,4′-bipyridine, water molecule and framework oxygen atoms. Crystal data for 1: monoclinic, space group = P21 (no. 4), a=12.549(3) (Å), b=23.496(5) (Å), c=14.551(3) (Å), β=114.87(3)°, V=3892.5(15) Å3, and Z=2.