Synthesis And Property Study Of Isopolyoxovanadate Hybrid Material And Sandwich-type Transitional Complex With Tungstobismuthate Compounds

The aim of this thesis is the synthesis of new compounds on the basis of [V4O12]4- anion, [W12O42]12- anion and [α-B-BiW9O33]9- polyoxoanion cluster, which are constructed by various metals. The study on synthetic conditions and rules for these three new compounds are also carried out and the three compounds were structurally characterized by elemental analyses, IR, TG and single crystal X-ray diffractions.1. One new 3D supramolecular framework on the basis of [V4O12]4- anion has been non-hydrothermally synthesized and structurally characterized:[Fe(phen)3]2[phen][V4O12]·19H2O 1.In compound 1, the water molecules are self-assembled through hydrogen bonds along the a and b axes to form a infinite 2D sheet. The size of the hole in the sheets is 10.422×14.062 ?, and is filled with the [V4O12]4- anions. The [Fe(phen)3]2+ complex cations act as charge-compensating and space-filling unit between the layers via hydrogen bonds and electrostatic interactions to form a 3D supramolecular framework.2. A new polyoxotungstate complex on the basis of [W12O42]12- anion has been synthesized in aqueous solution condition:[Na2(H2O)8][Na8(H2O)20][Cu(en)2] [W12O42]·3H2O 2In compound 2, the Cu(en)22+ complex links the [W12O42]12- anions to form a 1D chain, and the 1D chain further connects with [Na8(H2O)20]8+ units and [Na2(H2O)8]2+ units to construct a new 3D framework.3. A new 3D supramolecular structure has been synthesized under moderate conditions which was constructed by sandwich-type [α-B-BiW9O33]9- anion:Na(H2O)6(C6H16O3N)2[Na2(H2O)7(C6H16O3N)]2[(Na(H2O)2)3(Cu(H2O))3(BiW9O33)2]·14H2O 3.In compound 3, the [(Na(H2O)2)3(Cu(H2O))3(BiW9O33)2]9- anion links two bi-nuclear units [Na2(H2O)7(C6H16O3N)]3+ to form a [Na2(H2O)7(C6H16O3N)]2 [(Na(H2O)2)3(Cu(H2O))3(BiW9O33)2]3- cluster, and a new 3D supramolecular structure is further constructed by hydrogen bond interactions among this cluster, the free Na(H2O)6+ cations, and the free C6H16O3N+ molecules.