Synthesis and characterization of heterotrinuclear bis (μ2-chlorido)dicopper (II) mono zinc(II) complexes derived from succinoyldihydrazones

被引：16
作者：
Borthakur, Rosmita [1 ]
Kumar, Arvind [2 ]
Lal, R. A. [1 ]
机构：
[1] North Eastern Hill Univ, Dept Chem, Shillong 793022, Meghalaya, India
[2] Univ W Indies, Dept Chem, Fac Sci & Agr, St Augustine, Trinidad Tobago
来源：
SPECTROCHIMICA ACTA PART A-MOLECULAR AND BIOMOLECULAR SPECTROSCOPY | 2014年 / 118卷
关键词：
Heteropolymetallic complexes; Succinoyldihydrazones; Zinc (II); Copper (II) complexes; Spectroscopic studies and cyclic voltammetric studies; X-RAY-STRUCTURE; DICOPPER(II) COMPLEXES; TRINUCLEAR COPPER(II); DINUCLEAR COPPER(II); MAGNETIC-PROPERTIES; CRYSTAL-STRUCTURES; HYDRAZONIC LIGAND; OXO-COMPLEXES; COORDINATION; SPECTRA;
D O I：
10.1016/j.saa.2013.08.063
中图分类号：
O433 [光谱学];
学科分类号：
0703 ; 070302 ;
摘要：
Three new zinc (II)-copper (II) heterometallic trinuclear complexes of the composition [ZnCu2(L-n) (mu(2)-Cl)(2)(H2O)(6)]center dot 2H(2)O (H4Ln = H4L1, H4L2, H4L3) have been synthesized from substituted succinoyldihydrazones (H4Ln) in methanol medium. The composition of the complexes has been established on the basis of data obtained from analytical, mass spectral studies and molecular weight determinations in DMSO. The structure of the ligand H4L2 has been established by X-ray crystallography. The structure of the complexes has been discussed in the light of molar conductance, magnetic moment, electronic, EPR, IR and FT-IR spectral studies. The molar conductance values for the complexes fall in the region 1.2-1.7 ohm(-1) cm(2) mol(-1) in DMSO solution indicating that all of these are non-electrolyte. The magnetic moment values suggest weak M-M interaction in the structural unit of the complexes. The dihydrazone ligand is present in enol form in all of the complexes. Copper centre has tetragonally distorted octahedral stereochemistry. The EPR parameters of the complexes indicate that the copper centre has doublet state as the ground state. The electron transfer reactions of the complexes have been investigated by cyclic voltammetry. (C) 2013 Elsevier B.V. All rights reserved.
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页码：94 / 101
页数：8
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