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Beyond Kahn's Model: Substituent and Heteroatom Influence on Exchange Interaction in a Metal‐Verdazyl Complex
Author(s) -
Oms Olivier,
Rota JeanBaptiste,
Norel Lucie,
Calzado Carmen J.,
Rousselière Hélène,
Train Cyrille,
Robert Vincent
Publication year - 2010
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/ejic.201001033
Subject(s) - chemistry , heteroatom , substituent , intramolecular force , denticity , metal , ligand (biochemistry) , ferromagnetism , exchange interaction , crystallography , magnetic susceptibility , stereochemistry , computational chemistry , photochemistry , ring (chemistry) , organic chemistry , condensed matter physics , biochemistry , physics , receptor
The synthesis, structure and magnetic properties of the first thiooxoverdazyl metal complex [Cu(hfac) 2 (Svdpy)] [hfac = (1,1,1,5,5,5)‐hexafluoroacetylacetonate; Svdpy = 1,5‐dimethyl‐3‐(2‐pyridyl)‐6‐thiooxoverdazyl] is described. The organic radical acts as a bidentate ligand leading to a six‐coordinate metal complex. The fit of the thermal variations of the magnetic susceptibility reveal a ferromagnetic intramolecular exchange interaction. This finding is confirmed and analysed by using wavefunction‐based methods which indicate that the exchange interaction is governed by the substituent of the radical rather than by its heteroatom.