| Six new compounds based on heteropolymolybdate building blocks have beensynthesized by degradation and in situ synthesis in conventional aqueous solution. Thesecompounds were characterized by IR spectroscopy，UV spectroscopy，CV, TG，magneticproperties and so on.1. Via aqueous solution synthesis strategy, H4[α-GeMo12O40]·14H2O as precursor, threenew transition metal-monosubstituted keggin germanomolybdates were obtained bydegradation in the participation of organic N-containing ligand imidazole, molecular formulaas follows:[C3H5N2]6[GeMo11Co（H2O）O39]·9H2O （1）[C3H5N2]6[GeMo11Ni （H2O）O39]·9H2O （2）[C3H5N2]6[GeMo11Mn（H2O）O39]·6H2O （3）Compound1is composed of [GeMo11Co（H2O）O39]6-polyanion, countercation [C3H5N2]+and crystal water molecules.2. By way of aqueous solution synthesis methods, one1D chain-like structure ofcompound4is obtained in the participation of organic ethylenediamine molecules, sandwichtype of compound5containing four core nickel have been synthesized in the participation oforganic morpholine molecules.（H2en）3H4[Cu（H2O）4(CuGeMo9O33)2]·19H2O（en=ethylenediamine）（4）(C4H10NO)2H9[Na（H2O）5][Ni4（H2O）2(GeMo9O33)2]·13H2O （5）Compound4is composed of1D chain-like structure formed by [Cu（H2O）4(CuGeMo9O33)2]10-anion, protonated ethylenediamine molecules and lattice water molecules.Compound5is composed of [Ni4（H2O）2(GeMo9O33)2]12-polyanion, sodium ion, protonatedmorpholine molecules and crystal water molecules.[Ni4（H2O）2(GeMo9O33)2]12-presentsandwich-type structure made up of two three lacunary [GeMo9O33] building block and fourcore nickel cluster.3. In conventional aqueous solution, one2D network structure of compound6issynthesized by in situ synthesis.[Na（H2O）3]2H2[NiMo6O24H6]·2H2O （6）Compound6is composed of Anderson type [NiMo6O24H6]4-polyanion, sodium counterion, coordination water molecules and dissociative water molecules.[NiMo6O24H6]4-polyanion is linked by two Na+ions forming1D chain structure,1D chain structure is linkedby another two Na+ions forming2D network structure. |
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