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

Authors
Le Narvor, N Lapinte, C
Citation
N. Le Narvor et C. Lapinte, Interaction between two magnetic iron(III) centers through the elemental carbon chain in the complex [Cp*(dppe)Fe-C C-C C-Fe(dppe)Cp*][PF6](2), CR AC S IIC, 1(12), 1998, pp. 745-749
Citations number
20
Categorie Soggetti
Chemistry
Journal title
COMPTES RENDUS DE L ACADEMIE DES SCIENCES SERIE II FASCICULE C-CHIMIE
ISSN journal
13871609 → ACNP
Volume
1
Issue
12
Year of publication
1998
Pages
745 - 749
Database
ISI
SICI code
1387-1609(199812)1:12<745:IBTMIC>2.0.ZU;2-2
Abstract
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 an alog [Cp*(dppe)Fe-C=C-C6H4-C=C-Fe(dppe) Cp*][PF6](2) (2) [Cp* = pentamethyl cyclopentadienyl, dppe = ethylenebis(diphenylphosphine)] showed antiferroma gnetic 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) respectiv ely. The singlet tripler energy gap is sufficiently weak to render the comp lexes 1 and 2 paramagnetic at liquid nitrogen temperature. (C) Academie des sciences/Elsevier, Paris.