Two new inorganic-organic hybrid materials based on inorganic cluster, [XMoO] (X=P, As)

Two new inorganic-organic hybrid materials based on heteropolyoxometalates, (CHN)(P MoO).4HO I, and (CHN)(AsMoO).4HO II, where CHN is protonated pyrrolidine have been synthesized and structurally characterized by physic-chemical methods. Single-crystal X-ray diffraction method, infrared, ultraviolet spectroscopy, Thermogravimetricanalysis andcyclic voltammetry measurements of the title hybrid materials indicate that there are hydrogen bond interaction between O atoms of the heteropolyoxometalates and water molecules as well as the N and O atoms of the organic compound. The molecular structures of synthesized hybrid materials contain discrete entities of pyrrolidinumion and water molecules surround every [XMoO] anion over the extended crystalline network that the [XMoO] anion retains its "Dawson structure". Crystal data: I monoclinic, space group P2/a, a = 13,453(1) Å, b = 24,046 (1) Å, c = 24,119(1) β = 97,99(1)°, V = 7726,30(5) Å and Z = 4; II monoclinic, space group P2/a, a = 13.4900(1) Å, 24.0900(1) Å, 24.2740(1) Å, β = 98.320(1)°, V = 7805.40(7) Å and Z = 4.