Synthesis, Crystal Structures, and Characterization of Three Novel Copper Complexes Based on N-acylsalicylhydrazone and Different Secondary Ligands
作者:Min Wang、Zhaoxun Lian
DOI:10.1080/15533174.2013.818028
日期:2015.8.3
The reactions of copper acetate and (2-hydroxybenzylidene)-2-phenylacetohydrazide (L1) and/or (2-chlorophenoxy)-N'-(2-hydroxybenzylidene) acetohydrazide (L2) in the presence of different secondary ligands, piperazine (pipe), pyridine (Py), and urotropine (Ur), in the solution of methanol and dimethyl formamide (V:V = 10:2) yielded three novel copper complexes, formulated as [CuL1](2)(pipe)2DMF 1, [Cu(Py)(L2)](2) 2, and [Cu(L2)](Ur).DMF 3, respectively. These three compounds have been characterized structurally using single-crystal diffraction. In 1, the copper complexes are bridged by pipe ligands to result in dimers. The pipe ligand serves as a (2) bridge. In 2, two square-pyramids Cu(N2O3) polyhedrons share a common edge to form a dinuclear compound. In 3, the copper complexes are linked by Ur ligands to result in the formation of chain structure. The three compound exhibit similar luminescence at (max) = 440, 460, and 680nm upon excitation at 354nm, respectively.