铜(Ⅱ)与2,5-噻吩二甲醛Schiff碱配合物的合成及表征

Syntheses and Characterization of Complexes of 2,5-Thiophcncdicarbaldchyde Schiff Bases with Copper (Ⅱ)

本文报道了铜(Ⅱ)与2,5-噻吩二甲醛与一系列对位取代的邻氨基苯酚经缩合生成的Schiff碱配合物的合成,并对其进行了结构表征,测定了表观稳定常数,研究了配合物的组成、配体的配位方式以及配合物的成键性质。

Four new copper( Ⅱ ) complexes of Schiff bases, derived from condensation of 2,5-thio-phenedicarbaldehyde with o-amino-p-R-phenol (R =-(CH3)3, -H, -Cl,-NO2),were prepered and characterized by means of elemental analyses, electrical conductances, magnetic susceptibility, differential thermal-thermogravimetric analyses and visible-UV, IR and ESR spectra. Complexes CuL1 and CuL2 show characteristic, of square-planar coordination by two nitrogen and two oxygen donor atoms of the ligand about the copper atom. Complexes CuL3 . 2H2O and CuL4 . H2O which may possess hexa-coordination about the copper atom are arranged in a distorted octahedral geometry.