Synthesis, Structure And Properties Of Derivatives Of Polyoxomolybdates

On the basis of molecular design and assembly, under the conventional aqueous orhydrothermal conditions methods, three different series of structures ofheterpolyoxomolybdates were successfully synthetised by changing the reaction conditions,such as pH value, temperature and ratio. These complexes were charactered by X-raycrystallography, IR, UV, luminescent, XRD and thermal properties.（1） Five germanomolybdates compounds （H₂en）2H7{[Na0.5（H₂O）3.5]2[Cu2(β-Y-GeMo₉O₃₃)₂]}·6H₂O（1）（H₂en）2H{[Na2.5（H₂O）12]2[Cu（en）2][(Cu2（β-Y-GeMo9-O33）2]}·8H₂O（2）[Na4（H₂O）12]2H4[Cu2(β-Y-GeMo₉O₃₃)₂]·11H₂O（3）（H₂1,3-propanediamine）H₂{Na2（H₂O）10[Cu（GeMo9O33）]2}·17H₂O（4） have been successfully isolatedand characterized by X-ray crystallography. Compounds1⁴display dinucleartransition metal substituted sandwich-type structures with unusual trivacant{β-Y-GeMo9O33}8-germanomolybdate units.（2） One germanomolybdates compounds [Na6（H₂O）12][H₂Ge2Mo6O26]（5） have been firstsuccessfully isolated and characterized by X-ray crystallography.（3） Three transition metal derivant of polyoxomolybdates{H₂FeMo2O7[H（2,5-bipy-dica）]2}3（HMoO5）·19H₂O （6）[Zn2（H₂O）（2,2’-bipy-6,6’-dica）（MoO4）]n（7）[Cu（H₂1,10-phen）]2（Mo4O16）·2H₂O（8）constructed by transition metal have been successfully isolated and characterized byX-ray crystallography. Three compounds display three different structures which areisolated structure,1-D chain structure,2-D sheet structure.