Jean Jacques Girerd | Researchain

Archive Network Publication Hotspot Collaboration

Hotspot

Bubble
[Coming Soon]

Cloud

Mosaic
[Coming Soon]

Solid State Communications | 1980

Orbital interactions in a strongly antiferromagnetically coupled copper(II) linear chain: CuSe2O5

Olivier Kahn; Michel Verdaguer; Jean Jacques Girerd; J. Galy; F. Maury

Abstract The structure of CuSe 2 O 5 is characterized by chains with Cu(II) ions aligned along the c -axis of the monoclinic lattice and bridged by Se 2 O 2− 5 ligands. The intrachain Cu-Cu separation is 3.98 A. The magnetic susceptibility of this compound, investigated in the 3.8–300 K temperature range, reveals a strong intrachain antiferromagnetic coupling. The J exchange parameter of the isotropic Heisenberg Hamiltonian — J Σ N i =1 S i S i + 1 ( N →∞) is found equal to − 95.1 cm −1 . From a previously described orbital model, an interpretation of this behavior is proposed: the interaction of the magnetic orbitals along the chain leads to a MO band, the width of which is related to the magnitude of the antiferromagnetic coupling. The top of the band corresponds to an antibonding interaction of the CuO 4 chromophores through the selenium lone pairs whereas the bottom of the band corresponds to a non-bonding interaction of these chromophores.

Inorganic Chemistry | 1982

Crystal structures, magnetic anisotropy properties and orbital interactions in catena-(.mu.-nitrito)-bis(ethylenediamine)nickel(II) perchlorate and triiodide

Anne. Meyer; Alain Gleizes; Jean Jacques Girerd; Michel Verdaguer; Olivier Kahn

Journal of the American Chemical Society | 1992

Spin exchange coupling in asymmetric heterodinuclear complexes containing the .mu.-oxo-bis(.mu.-acetato)dimetal core

Rainer Hotzelmann; Karl Wieghardt; Ulrich Floerke; Hans Juergen Haupt; David C. Weatherburn; Jacques Bonvoisin; Geneviève Blondin; Jean Jacques Girerd

Inorganic Chemistry | 1980

Orbital reversal in (oxalato)copper(II) linear chains

Jean Jacques Girerd; Olivier Kahn; Michel Verdaguer

Journal of the American Chemical Society | 1993

Double exchange and vibronic coupling in mixed valence systems. Origin of the broken-symmetry ground state of [Fe3S4]0 cores in proteins and models

Serguei A. Borshch; Emile L. Bominaar; Geneviève Blondin; Jean Jacques Girerd

Inorganic Chemistry | 1986

Copper(II) and nickel(II) trinuclear species with dithiooxamide derivative ligands: structural, magnetic, spectroscopic, and electrochemical properties

Richard Veit; Jean Jacques Girerd; Olivier Kahn; Francis Robert; Yves Jeannin

Inorganic Chemistry | 1978

Crystal structure and magnetic properties of catena-.mu.-sulfato-[N,N'-bis(2-hydroxyethyl)dithiooxamido(2-)-N,O,S:N',O',S']bis[aquacopper(II)]: a chain of copper(II) dinuclear units with a 594 cm-1 singlet-triplet separation and a 5.61 .ANG. copper-copper distance

Jean Jacques Girerd; S. Jeannin; Yves Jeannin; Olivier Kahn

Inorganic Chemistry | 1979

Crystal structure and magnetic properties of bis(.mu.-aqua)bis-.mu.-[N,N'-bis(2-hydroxyethyl)dithiooxamidato(2-)-N,O,S':N',O',S']-bis[aquacopper(II)sulfatocopper(II)]. A new example of very strong antiferromagnetic coupling between copper(II) ions far away from each other

C. Chauvel; Jean Jacques Girerd; Yves Jeannin; Olivier Kahn; G. Lavigne

Inorganic Chemistry | 1980

EXAFS study and magnetic properties of copper(II) chloranilato and bromanilato chains: a new example of orbital reversal

Michel Verdaguer; Alain Michalowicz; Jean Jacques Girerd; N. A. Berding; Olivier Kahn

Inorganic Chemistry | 1984

Amino acid amides of dithiooxalic acid: spectroscopic, electrochemical, and magnetic properties of copper(II) binuclear complexes and crystal structure of [N,N'-(1,2-dithioxoethane-1,2-diyl)bis(methyl methioninato)]bis(bromocopper (II)

Richard Veit; Jean Jacques Girerd; Olivier Kahn; Francis Robert; Yves Jeannin; Nabil El Murr

Explore More