Synthesis, Structure and Electrochemistry of Copper(Ⅱ) Complexes with Di[( o-salicylidenimino)phenoxy]ethane Ligand

Abstract

Abstract: Two Cu(Ⅱ) complexes with title Schiff-base ligand H₂L, micro-crystal Cu(HL)ClO₄·H₂Oand single crystal , have been synthesized and characterized by IRspectra, etc .. By cyclic voltammetry, a quasi-reversible electron-transferring process has been shown in Cu(Ⅱ)/Cu(Ⅰ) couples reaction of [CuL]; the given value E_1/2⁰=-0.73 Vhas been estimated. The structure of [CuL] has been determined by X-ray diffraction with R=0.036. The results indicate that the deprotonic ligand, as a practically tetradentate, coordinates only with its two imino and two phenoxo groups to form a D_2d symmetric geometry. Two different torsional modes of the homologous ligands, occurring in mono-and di-nuclear Cu(Ⅱ) complexes, respectively, have been contrasted and discussed.

Key words: Schiff-base ligand, Copper(Ⅱ) complex, Synthesis, Crystal structure, Cyclic voltammetry

CLC Number:

O614.2

TrendMD:

ZHANG Wen-Xing, SI Shu-Feng, MA Chang-Qin . Synthesis, Structure and Electrochemistry of Copper(Ⅱ) Complexes with Di[( o-salicylidenimino)phenoxy]ethane Ligand[J]. Chem. J. Chinese Universities, 2001, 22(8): 1295.

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Synthesis, Structure and Electrochemistry of Copper(Ⅱ) Complexes with Di[( o-salicylidenimino)phenoxy]ethane Ligand

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