Abstract
Two new inorganic-organic hybrid materials based on heteropolyoxometalates, (C4H10N)(6)(P-2 Mo18O62).4H(2)O I, and (C4H10N)(6)(As2Mo18O62).4H(2)O II, where C4H10N 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 [X2Mo18O62](6-) anion over the extended crystalline network that the [X2Mo18O62](6-) anion retains its "Dawson structure". Crystal data: I monoclinic, space group P2(1)/a, a = 13,453(1) , b = 24,046 (1) , c = 24,119(1) beta = 97,99(1)A degrees, V = 7726,30(5) (3) and Z = 4; II monoclinic, space group P2(1)/a, a = 13.4900(1) , 24.0900(1) , 24.2740(1) , beta = 98.320(1)A degrees, V = 7805.40(7) (3) and Z = 4.