Polynuclear complexes of a series of hydrazone and hydrazone-oxime ligands - M2 (Fe), M4 (Mn, Ni, Cu), and Mn (Cu) examples

被引：10

作者：

Drover, Marcus W. ^{[1
]}

Tandon, Santokh S. ^{[2
]}

Anwar, Muhammad U. ^{[1
]}

Shuvaev, Konstantin V. ^{[1
]}

Dawe, Louise N. ^{[1
]}

Collins, Julie L. ^{[3
]}

Thompson, Laurence K. ^{[1
]}

机构：

[1] Mem Univ Newfoundland, Dept Chem, St John, NF A1B 3X7, Canada

[2] Kent State Univ Salem, Dept Chem, Salem, OH 44460 USA

[3] Mem Univ Newfoundland, C CART Xray Diffract Lab, St John, NF A1B 3X7, Canada

来源：

POLYHEDRON | 2014年 / 68卷

基金：

加拿大自然科学与工程研究理事会;

关键词：

Hydrazone ligands; Structure; Magnetism; Grid; Chain; Polynuclear; MAGNETIC-PROPERTIES; CRYSTAL-STRUCTURE; LANTHANIDE CLUSTER; DIAZINE LIGANDS; SQUARE GRIDS; ASSEMBLIES; COPPER(II); DIMERS;

D O I：

10.1016/j.poly.2013.10.018

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Tetranuclear, dinuclear and chain complexes involving some polyfunctional hydrazone and thiocarbohydrazone-based ligands are discussed. Ni(II) and Mn(II) [2 x 2] grids form with mu(2)-S and mu(2)-O bridges respectively, and are antiferromagnetically coupled (J = -167(5), -3.59(2) cm(-1) respectively). With the Fe(II) based system oxidation to Fe(III) occurs, and a mu(2)-O-hydrazone bridged dimer results, with antiferromagnetic exchange between the S = 5/2 spin centers (J = -22.5(2) cm(-1)). In the case of Cu(II) the diazine group acts as a mu(2)-N-N bridge between Cu(II) centers in two cases involving a tetranuclear and a chain complex. Non-orthogonal bridging through N-N and carboxylate bridges leads to antiferromagnetic exchange in the tetranuclear case (J = -32.7(7), -16.1(7) cm(-1) respectively) and ferromagnetic exchange in the chain complex due to orthogonal N-N bridging (J = 3.3(1) cm(-1)). (C) 2013 Elsevier Ltd. All rights reserved.

引用

页码：94 / 102

页数：9

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