Syntheses, Structures, Characterizations Of Mo₈/Mo₆Polyoxometalate Modified By Transition Metal/H₂biim

In this paper, Anderson Polyoxometalates （POMs） as the starting material, the transitionmetal ions (such as Cu²⁺、Co²⁺、Fe³⁺) and2,2’-biimidazole （H₂biim） have been introduced intothe skeleton structures of polyoxoanions. By hydrothermal synthesis method, two kindsstructure of the compounds of Mo8/Mo6were synthesized and characterized bysingle-crystal X-ray diffraction, TG analysis methods.1. By hydrothermal synthesis method,（NH₄）₃[CrMo₆O₂₄H₆]·7H₂O （CrMo₆） as thestarting material, Cu/H₂biim groups introducing into Anderson POMs skeleton, threeinorganic-organic compounds based on {CrMo₆} have been synthesized.{[μ-[Cu（H₂biim）]₂CrMo₆O₁₈（OH）₆][μ-[Cu（H₂biim）]₂CrMo₆O₁₈（OH）₄]}n·8nH₂O （1）（Cu（H₂biim）₂）₂(H₅CrMo₆O₂₄)（2）[H₁₁（H₂biim）₄（CH₃COO）₂CrMo₆O₂₄]（3）2. By hydrothermal synthesis method, Sodium molybdate and aluminium as the startingmaterial, Co-H2biim groups introducing into Anderson POMs skeleton, one inorganic-organiccompound based on {AlMo₆} have been synthesized.[Na{Co（C₆H₆N₄）₃}(H₆AlMo₆O₂₄)]·8H₂O （4）3.{CrMo₆} as the starting material, according to self-assembled, first achieved {Mo₈}from {Mo₆}, four bi-support of inorganic-organic compounds have been synthesized byhydrothermal synthesis method[Cu（H₂biim）₂]₂[β-Mo₈O₂₆{Cu（H₂biim）₂}₂][β-Mo₈O₂₆]（5）[{Fe（H₂biim）₂（Hbiim）}₂(γ-Mo₈O₂₆)]·5H₂O （6）[{Co（H₂biim）₂（Hbiim）}₂(γ-H₂Mo₈O₂₆)]·5H₂O （7）[{Co（H₂biim）₂（Hbiim）}₂(γ-H₂Mo₈O₂₆)]·H₂O （8）...