A Porous Organic-inorganic Hybrid Compound Constructed from Polyoxovanadium Borate Anions,Dinuclear Na Sites and Metal-organic Units

A polyoxovanadium borate Na(H2O)]2Na(H2O)2]2Cu(en)2]V12B18O54(OH)6]·(H3O)2·(H2O)18 1 (en = ethylenediamine) has been hydrothermally synthesized and characterized by IR, two-dimensional infrared (2D IR) correlation spectroscopy with magnetic and thermal perturbation, thermal IR spectroscopy, thermal gravimetrie analysis and single-crystal X-ray diffraction. It crystallizes in triclinie, space group P1 with a = 12.981(3), b = 13.044(3), c = 14.208(3)(A), a =63.98(3), β = 77.17(3), γ = 14.208(3)°, V = 2001.0(8) (A)3, Z = 1, Mr = 2518.05, Dc = 2.090 g/cm4,F(000) = 1255.0, Mu(mm-1) = 1.756, λ(MoKα) = 0.71073 (A), R = 0.0625 and wR = 0.1952. In 1, the V12BisO54(OH)6]8- units are connected by Cu(en)2]2+, binuclear Na(1) and Na(2) to form a three-dimensional porous framework.