Synthesis, Structure And Properties Of Coordination Polymers Generated From Copper Iodide Building Block

Metal–organic frameworks (MOFs) have been one of interesting fields in material science based on metal-ligand coordinative covalent bonding is of great interest, mostly motivated by their intriguing structural features. According to the principle of crystal engineering, it is possible that rational design and synthesis of crystalline materials by selecting certain geometric metal ions and suitable organic ligands. At the same time, crystalline materials can be endowed with optics, electric, magnetism, enantioselective separation and catalysis by selecting functional metal ions and organic ligands with functional groups. As the properties of the coordination polymers is determined by their chemical constituents and framework topologies, seeking the coordination polymers with novel topoly has been considered as the exploiting the funcyional properties of the coordiation polymers.Although many research groups get a lot of great fruits in design, synthesis and functional development according to the principle of the crystal engineering. However, the synthesis mechanism is still not known clearly. So studying deeply and accumulating abundant experimental facts is necessarily, finally to predict and control the framework constructed wihe organic ligands. Cu+ have the ability to join with two, three and four ions, and X- have special ability to coordinate to metal, so Cu+ and X- will generate lots of new compounds. In this work, we have designed and synthesized several coordination polymers of copper iodide based through controlling reaction conditions. We discuss here the syntheses and structural features of these novel compounds and the structural relationships among them. We also study their physical properties.In the first chapter, the concepts, methods, histories and new developments of coordination polymers and copper halides are concisely introduced. Taking into consideration the international studies, we have focused our study on the influence of the changes caused by the coordination position or conformation of organic component on the structure of inorganic-organic hybrid compound. At the end of this chapter, we pointed out the importance of the search project and summarized the important results obtained in the thesis.In the second chapter, we synthesized two copper iodides with two organic ligands. Compound Cu4I4·4H2O(CM1) constructed by Cu4I4 and water molecule. Although the structure of CM1 is very simple, oxygen coordinated to Cu+ is rare. So synthesis of CM1 lays a foundation for synthesis of copper halides with oxygen containing ligands. CuI(C3H3N6)(CM2) was constructed by one-dimension ladder chain and organic ligand. Two compounds show photoluminescence at room temperature in the solid state.In the third charter, we synthesized two low-dimention copper iodides, and we found in situ reaction of DABCO in these two compounds. Compound Cu3I4(C8H17N2)(CM3) constructed by an ion copper iodide chain and single alkylation DABCO. Compound (CuBr)7I4(C10H22N2)4·H2O(CM4) constructed by an ion copper iodide chain and double alkylation DABCO. Cu+ and X- adopt several complex structures.In charter four, we report two examples of the simultaneous redox of Cu2+ to Cu+ and X7+ to X-, and self-assembly under solvothermal conditions I3(C6H8N3)(CM5) and Cu12I18(C6H8N3)6 (C6H7N3=2,3-dihydroimidazo[1,2-α]-pyrimidine). We found an in situ cycloaddition of 2-amino-pyrimidin and EtOH.