Interaction between two magnetic iron(III) centers through the elemental carbon chain in the complex [Cp(dppe)Fe-CC-CC-Fe(dppe)Cp][PF6]2

被引：46

作者：

Le Narvor, N ^{[1
]}

Lapinte, C ^{[1
]}

机构：

[1] Univ Rennes 1, CNRS, UMR 6509, F-35042 Rennes, France

来源：

COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE C-CHIMIE | 1998年 / 1卷 / 12期

关键词：

carbon chain; iron; organoiron; magnetic properties; antiferromagnetic;

D O I：

10.1016/S1251-8069(99)80040-1

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Temperarure-dependent magnetic susceptibility measurements of the bis[iron(III)] complex [Cp* (dppe) Fe-C=C-C=C-Fe (dppe) Cp*] [PF6](2) (1) and its analog [Cp*(dppe)Fe-C=C-C6H4-C=C-Fe(dppe) Cp*][PF6](2) (2) [Cp* = pentamethylcyclopentadienyl, dppe = ethylenebis(diphenylphosphine)] showed antiferromagnetic behavior. Isotropic spin only models of the data for 1 and 2 derived magnetic exchange coupling constants of J= -18.2 and -1.0 cm(-1) respectively. The singlet tripler energy gap is sufficiently weak to render the complexes 1 and 2 paramagnetic at liquid nitrogen temperature. (C) Academie des sciences/Elsevier, Paris.

引用

页码：745 / 749

页数：5

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Interaction between two magnetic iron(III) centers through the elemental carbon chain in the complex [Cp*(dppe)Fe-CC-CC-Fe(dppe)Cp*][PF6]2

Interaction between two magnetic iron(III) centers through the elemental carbon chain in the complex [Cp(dppe)Fe-CC-CC-Fe(dppe)Cp][PF6]2