The hydrothermal syntheses and characterization of one- and two-dimensional structures constructed from metal-organic derivatives of polyoxometalates:: [{Cu(bpy)2}{Cu(bpy)(H2O)}(Mo5O15){O3P(CH2)4PO3}]•H2O and [{Cu2(tpypyz)(H2O)2}(Mo5O15)(O3PCH2CH2PO3)]•5.5H2O [bpy=2,2′-bipyridine, tpypyz = tetra(2-pyridyl)pyrazine]