Rhenium(IV)-copper(II) heterobimetallic complexes: Synthesis, crystal structure and magnetic properties

被引：12

作者：

Bienko, Alina ^{[1
]}

Klak, Julia ^{[1
]}

Mrozinski, Jerzy ^{[1
]}

Kruszynski, Rafal ^{[2
]}

Bienko, Dariusz C. ^{[3
]}

Boca, Roman ^{[4
]}

机构：

[1] Univ Wroclaw, Fac Chem, PL-50383 Wroclaw, Poland

[2] Tech Univ Lodz, Dept Xray Crystallog & Crystal Chem, Inst Gen & Ecol Chem, PL-90924 Lodz, Poland

[3] Wroclaw Univ Technol, Fac Chem, PL-5037 Wroclaw, Poland

[4] Slovak Tech Univ, Inst Inorgan Chem, SK-81237 Bratislava, Slovakia

来源：

POLYHEDRON | 2008年 / 27卷 / 11期

关键词：

chain structure; chloro-bridged Re(IV) complexes; macrocyclic complexes; exchange interaction; zero-field splitting;

D O I：

10.1016/j.poly.2008.04.056

中图分类号：

O61 [无机化学];

学科分类号：

070301 ; 081704 ;

摘要：

Two Re(IV)-Cu(II) heterometallic complexes [(Cu L-alpha)[ReCl4(ox)])(n) (where L-alpha = N-meso-5,12-Me-2-7,14-Et-2-[14]-4,11-dieneN(4)), 1, and (CuL beta)[ReCl4(ox)] (L-beta = N-rac-5,12-Me-2-7,14-Et-2-[14]-4,11-dieneN(4)N-rac-5,12-Me-2-7,14-Et-2-[14]-4,11-dieneN(4)), 2, were synthesized. The [CuL2+] macrocyclic cation is coordinated from above and below by [ReCl4(ox)](2-) units through the chloro-ligands and creates a chloro-bridged heterometallic Re-IV-Cu-II one-dimensional zig-zag chain. Compound 2 can be viewed as a heterobimetallic dinuclear unit, in which the Re(IV)-Cu(II) centers are linked by an oxalato bridge. The magnetic behavior of 1 and 2 has been investigated over the temperature range 1.8-300 K. Compound 1 behaves like a ferrimagnetic (Re(IV)-Cu(II)) bimetallic, one-dimensional chain with intrachain antiferromagnetic coupling Compound 2 shows a weak antiferromagnetic interaction within the (Re(IV)-Cu(II)] unit along with a strong single-ion anisotropy,D(Re)= -63 cm(-1). (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：2464 / 2470

页数：7

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