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Journal of Structural Chemistry

2017 year, number 1

CRYSTAL STRUCTURE, ELECTROCHEMICAL AND MAGNETIC PROPERTIES OF A NEW BINUCLEAR COPPER(II) COMPLEX WITH BENZOIC ACID AS A LIGAND

W. Lu, S.-L. Yang, L. Xu, X.-W. Chi, Y.-Y. Xu, H.-J. Sun
Nanjing Forestry University, Nanjing, P. R. China
Keywords: synthesis, copper(II) complex, crystal structure, electrochemical and magnetic properties

Abstract

A new complex [Cu2(L)4(DMF)2] (1) with benzoic acid (HL) as a ligand is synthesized by the solid phase synthesis method. Crystal data for the complex are as follows: monoclinic, space group P21/n, a = 10.593(2) Å, b = 10.123(2) Å, c = 16.336(3) Å, β = 93.55(3)°, V = 1748.4(6) Å3, Dc = 1.439 g/cm-3, Z = 4, F (000) = 780, GOOF = 1.003, final discrepancy factors R1 = 0.0624, wR2 = 0.1559. In 1, the Cu(II) ion is coordinated by six atoms to give a distorted octahedral coordination geometry. The electrochemical, fluorescent, and magnetic properties of 1 are studied. The results show that the electron transfer of 1 is quasi reversible in the electrode reaction corresponding to Cu(II)/Cu(I), and 1 exhibits three relatively strong fluorescent emission peaks at 403, 425, and 454 nm. In addition, complex 1 displays the antiferromagnetic property in a temperature range of 300 ~ 10 K.