Assembling ferromagnetically coupled (Cu, Gd) pairs: toward higher spin entities

被引：28

作者：

Costes, JP

Dahan, F

机构：

[1] Univ Toulouse 3, Chim Coordinat Lab, CNRS, UPR 8241, F-31077 Toulouse, France

[2] Inst Natl Polytech Toulouse, F-31077 Toulouse, France

来源：

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE C-CHIMIE | 2001年 / 4卷 / 02期

关键词：

high-spin molecule; 3d-4f complex; Cu-Gd complex; ferromagnetism;

D O I：

10.1016/S1387-1609(00)01194-4

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

We have previously shown that in strictly dinuclear copper-gadolinium complexes. ferromagnetism is an intrinsic property of the Cu-Gd pair. yielding a S= 4 ground stare. We want non to show that similar dinuclear complexes obtained with an original ligand having a supplementary oxygen donor atom are able to;assemble in order to yield higher spin entities with :a S = 8 ground state. These dimeric entities have four metallic centres. two Cu(II) :Ind two Gd(III) ions. arranged at the vertices of a rectangle in such a way that two different ferromagnetic Cu-Gd interactions are operative. The stronger one (7 cm(-1)) is supported by a double phenolate bridge (CuO2Gd) and the weaker one (0.6 cm(-4)) by a single amido bridge (Cu-N-C-O-Gd). (C) 2001 Academie des sciences Editions scientifiques et medicales Elsevier SAS.

引用

收藏

页码：97 / 103

页数：7

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