Synthesis and magnetic properties of a new oxalato-bridged heterotrinuclear complex, [NiCr2(bipy)2(C2O4)4(H2O)2]•H2O.: A rare case of antiferromagnetic coupling between Cr(III) and Ni(II) ions

被引：35

作者：

Stanica, N

Stager, CV

Cimpoesu, M

Andruh, M

机构：

[1] Univ Bucharest, Fac Chem, Inorgan Chem Lab, Bucharest 70254, Romania

[2] McMaster Univ, Dept Phys & Astron, Hamilton, ON L8S 4M1, Canada

来源：

POLYHEDRON | 1998年 / 17卷 / 10期

关键词：

chromium complexes; nickel complexes; oxalato complexes; 2,2 '-bipyridine; magnetic properties;

D O I：

10.1016/S0277-5387(97)00457-9

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

A new heterotrinuclear complex, [NiCr2(bipy)(2)(C2O4)(4)(H2O)(2)]. H2O, has been synthesized by self-assembling [Cr(bipy)(C2O4)(2)](-) building blocks with Ni(II) ions. The synthesis way consists of the reaction of a barium(II) precursor, [BaCr2(bipy)(2)(C2O4)(4)(H2O)]. H2O, with nickel(II) sulfate. Variable-temperature magnetic susceptibility measurements indicate an antiferromagnetic coupling between Ni(II) and Cr(III) ions (J = -0.6 cm(-1), D-Ni = 0.4 cm(-1), H = -J(SCr1SNi + SCr2SNi) + SNiDNiSNi). (C) 1998 Elsevier Science Ltd. All rights reserved.

引用

页码：1787 / 1789

页数：3

共 14 条

[1] [Cr(bipy)(C2O4)(2)](-) - A versatile building block for the design of heteropolymetallic systems .2. Syntheses and crystal structures of CuCr2(bipy)(2)(mu-C2O4)(2)(C2O4)(2)(H2O)(2)center dot 1(1)/2H2O and (AgCr(bipy)(mu-C2O4)(2)(H2O)(2))(2) and magnetic properties of the copper(II) derivative [J].