The Structure And Characterization Of N-heterocyclic Compounds And Their Metal Complexes

The 1,2,3-triazole derivatives are a series of important five-membered N-heterocyclic compounds. In recent years, with the development of hi-technology and the interdisciplinarity between the material science, biology, and physics permeable, which are widely used in pesticides, pharmaceuticals, materials and other fields. Because N atoms can be used as electron donor, the 1,2,3-triazole derivatives have the very strong coordination abilities and changeable coordination model and the 1,2,3-triazole derivatives can build a variety of novel metal organic structure.We have made apreliminary study of the complexes with 1,2,3-triazole carboxylic acid. In this paper we designed and synthesized the new compound: 1-pyrazine-4-phenyl-1H-1,2,3-triazole by using 2-chloride pyrazine, phenyl acetylene as the raw materials. The compounds have been characterized by TG/DTA, NMR, and FT-IR.With 1-pyrazine-4-phenyl-1H-1,2,3-triazole (L) as the ligand, we have designed and synthesized six metal-organic complexes:[Cu2(L)2I2]n(1)?[Cu2(L)2Br2]n(2)? [Cu2(L)2Cl2]n(3)?[Cu2(L)2Cl]n(4)?[Cu2(L)2Br2]2(5)?[Cu(L)SCN]n(6), which were prepared under acetonitrile or acetonitrile/methanol solution separately. Their structures were charactered by FT-IR and crystal structures. The complexes 1,2,3,4 have 1D chain and the hydrogen bonding interactions link complexes into 3D supramolecular networks. The complexe 5 is a dimer and the complexe 6 has 3D structure. In addition, the complexes have been characterized by thermogravimetric/differential thermal analysis. At last, we studied the properties of fluorescent and the electrochemical properties of complexe 1?2.