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Studies On Some Heteropoly Compounds Containing Tellurium

Posted on:2008-10-11Degree:MasterType:Thesis
Country:ChinaCandidate:S F MoFull Text:PDF
GTID:2121360215957815Subject:Inorganic Chemistry
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This dissertation is composed of four parts as following:Part one: ReviewIn this part, the history, structure, classification and future opportunities of heteropoly compounds were reviewed and the research state of heteropoly compounds containing the VIA elements Te as heteroatom was summarized.Part two: Synthesis and Characterization of Tungstotellurate Linked by Transition Metal Complex Fragments.In this part, two novel organic-inorganic hybrid tungstotellurate Na2[Co(phen)3]2[TeW6O24]·25.16H2O and Na2[Ni(phen)3]2[TeW6O24]·22H2O(2) (phen = phenanthroline)have been synthesized and characterized by the elemental analyses, infrared spectra, thermal analyses, and single-crystal X-ray diffraction. The compound 1 crystallizes in the monoclinic system, space group P2 (1)/n with a= 9.903(2) A, b = 23.761(7) A, c = 21.092(5) A, V= 4962(2) A3, Z=2, Dc = 2.218g/cm3, R1 = 0.0364; The compound 2 crystallizes in the monoclinic system, space group P-1 with 11.329(4) A, b=16.148(6 ) A, c=16.367(6) A, V=2477.7(15) A3, Z=1, Dc=2.182g/cm3 , R1= 0.0630= The X-ray structure analysis reveals that both the compounds contain Anderson-Evans type anion.Part three: Synthesis and Characterization of Organic-Inorganic Hybrid of Na2(en){[Ni(en)2(H2O)]2[Te0.8W6.2O24]}·8H2O andNa2{[Cu(en)2]2[Te0.8W6.2O24]}·12H2OIn this part, the title compounds, Na2(en){[Ni(en)2(H2O)]2[Te0.8W6.2O24]}·8H2O and Na2{[Cu(en)2]2[Te0.8W6.2O24]}·12H2O (en = ethylenediamine) were synthesized and reported for the first time and were characterized by using single-crystal X-ray diffraction, chemical analysis, IR and TG.Part four: Synthesis and Characterization a series of Heteropolymolybdate with Te6+ containing Lanthanide.In this part, four compounds of heteropolymolybdate with Te6+ containing lanthanide were synthesized and reported for the first time. The physical and chemical properties of these new heteropoly compounds were studied by using chemical analysis, elementary analysis, infrared spectra, thermal analyses, and single-crystal X-ray diffraction.
Keywords/Search Tags:heteropoly compound, crystal structure, synthesis, properties, characterization
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