The Synthesis And Crystal Structure Of Coordination Compounds Based On Cu(â… ), Au(â… ) And 3,5-disubstituted-1,2,4-Triazoles

In this thesis, we synthesized two ligands (both of them were unsymmetrical 1,2,4-triazoles)and nine metal compounds, which were characterized by element analyses, IR spectra, 1HNMR. In the same time, the five complexes were structurally characterized by single crystal X-ray diffraction.Two ligands: 3-ethyl-5-phenyl-1H-1,2,4-triazole 3-methyl-5-ethyl-1H-1,2,4-triazoleThe three ligands which wereused in this paper 3,5-di-sec-butyl-1H-1,2,4-triazole (HL1) 3,5-di-(methylphenyl)-1H-1,2,4-triazole (HL2) 3,5-diisopropyl-1,2,4-1H-triazole (HL3)Five complexes: [Au(3,5-S-Bu2tz)]3 (1) [Au(3,5-dimephtz)]3 (2) {[Cu4(μ3-L1)4](Cu4Br4)2}n (3) (Cu4L1Cl1.5)n(4) {Cu3[Cu5(μ-L3)6](C1O4)3(H3O-)·6H2O} (5)According to crystal structures, these compounds were divided into two types:1. Nine-numbered ring of (Au-N-N)3 exists in the complexes of [Au (3,5-S-Bu2tz)]3 (1) and [Au(3,5-dimephtz)]3 (2),3,5-disubstituted-1,2,4-triazole could be deprotonated by the triethylamine,then N1,N2 atoms of thriazole bridge two gold atoms to form (Au-N-N)3, In additon, no intermolecular Au...Au contact is present in the crytal structure of complexes(1) and (2).2.3D coordination polymers of Cu(Ⅰ). The Cu(Ⅰ) complexes witch were syntheticed in this paper were 3D polymer. The Nl, N2, N4 atoms of triazole participate the coordination. The Br is connected with Cu atoms in{Cu2[Cu2(μ3-L3)4](Cu4Br4)2}n (3), and the complexes is diamond-like coordination poly witch containing Cubane Cluster(Cu4Br4), while the external secondary building units are connected by Cu(Ⅰ); Cl- participated the (Cu4L12.5Cl1.5)n (4); Based on the results of our study, we draw the following conclusions:1. We got the nine-numbered ring of (Au-N-N)3 by using the organic base triethlamine in the synthesis process. The Au(Ⅰ) atom were connected anion with N1,N2 atoms of the triazole.2. In Cu(Ⅰ) complexes, the structures of polymers were influenced by the anion coordination ability and the steric hindrance of the anion, which could be attributed to the chang of angles of N-Cu-N.3. We found that water also can act as weak base when the Cu(Ⅰ) coordination polymers formed in the high temperature and pressure, and then the N4 atom could be further connected by Cu(Ⅰ) to form complicated.