Synthesis And Properties Of Organic-Inorganic Hybrid Compounds Having Nitrogen-Containing Heterocycle And Polymetallic Oxygen Cluster

In this thesis,four new organic-inorganic hybrid compounds were synthesized using molecular design and assembly technique and benzimidazole and its derivatives and polymetallic oxygen clusters as starting materials.Their composition,crystal structure and properties were studied by elemental analysis,IR,UV-Vis,TQ CV,and X-ray single crystal diffraction methods.1.At room temperature,a compound with two-dimensional lamellar structure was synthesized:[Ag(C7H5N2)2]{Fe[Ag(C7H5N2)2]PMoⅥ10MoⅤ2O40}(1)The benzimidazole silver[Ag(C7H5N2)2]in the compound(1)having a double oar type structure linked with heteropoly anions through Mo-O-Fe-C bridge to form a new type of organic-inorganic hybrid compound.2.Benzimidazole and benzimidazolylphenol nitrogen-containing heterocyclic organic components assemblied with heteropoly anions by hydrogen bonding,electrostatic attraction,and π-π stacking to form two benzimidazolyl-modified phosphorus molybdenum polymetallic oxygen cluster compounds:[C7H6N2][(C7H7N2)3(PMo12O40)](2)(C13H10N2O)(C13H11N2O)3PMo12O40(3)The electrochemical properties and photocatalytic degradation studies revealed that there were four single-electron reduction processes from Mo(VI)to Mo(V)in the compound(2)and three consecutive redox processes of Mo in the compound(3).The two compounds exhibited good performance in the photocatalytic degradation of rhodamine B and methylene blue.3.Under the open environmental conditions in winter,a two-dimensional supramolecular compound was synthesized by natural evaporation method using phosphotungstic acid and benzimidazolylphenol as the reaction materials:[C13H11N2O]3[PW12O40](4)In the compound(4),three benzimidazolylphenol and heteropoly anion[PW12O40]3-formed a wavy one-dimensional chain structure through hydrogen bonding and electrostatic attraction.The π-π stacking among chains generated a supramolecular compound of layered structure.The electrochemical properties studies show that there was a single electron reduction from W(Ⅵ)to W(Ⅴ)in the compound(4).