Hydrothermal synthesis and structure of a two-dimensional bimetallic copper–molybdophosphonate, [{Cu4(H2O)2(phenbisterpy)2(HO3P(CH2)4PO3H)}(Mo4FO12)2{O3P(CH2)4PO3}]·4H2O,constructed from {Mo4FO12}1− clusters and copper-ligand chains (phenbisterpy = 1,4-bis(2,2′:6′,2′′-terpyridin-4′-yl)benzene) |