An open-framework cobalt molybdate possessing {Mo2O7} building block: Hydrothermal synthesis and structural characterization of [CoMo2O7(4,4′- bipy)1.5]

The hydrothermal reaction of Co(COO)2·4H2O, MoO3, H3PO4 and 4,4′-bipyridine yields bipyridine-ligated cobalt dimolybdate [CoMo2O7(4,4′-bipy)1.5] (1) (4,4′-bipy = 4,4′-bipyridine) in the triclinic system with space group of P 1 and cell parameters of a = 7.1951(8) Å, b = 11.1708(17) Å, c = 11.4514(11) Å, α = 98.545(7)°, β = 90.315(2)°, γ = 105.777(5)°, V = 874.88(19) Å3, and Z = 2. Its structure consists of Co/Mo/O bimetal oxide layers with {Mo2O7} building blocks, linked by the coordination of 4,4′-bipy ligand with Co and Mo atoms, into a 3D porous hybrid framework.