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New Magnetically Coupled Bimetallic Complexes as Potential Building Blocks for Magnetic Materials
Author(s) -
GordonWylie Scott W.,
Claus Brian L.,
Horwitz Colin P.,
Leychkis Yan,
Workman José M.,
Marzec Alexander J.,
Clark George R.,
Rickard Clifford E. F.,
Conklin Brenda J.,
Sellers Scott,
Yee Gordon T.,
Collins Terrence J.
Publication year - 1998
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/(sici)1521-3765(19981102)4:11<2173::aid-chem2173>3.0.co;2-q
Subject(s) - bimetallic strip , ferrimagnetism , electron paramagnetic resonance , spin (aerodynamics) , ferromagnetism , squid , ligand (biochemistry) , condensed matter physics , chemistry , materials science , crystallography , nuclear magnetic resonance , physics , magnetic field , organic chemistry , catalysis , magnetization , biology , quantum mechanics , thermodynamics , ecology , biochemistry , receptor
Long‐lived organic cation radical species, [1 I ] − and [2 I ] − , are formed when bimetallic Co III or V V (O) complexes of a new binucleating ligand are oxidized by one electron. The V V (O) complex, [ 2 I ] − , has a total spin, S T , of 1/2, while the robust Co III complex, [ 1 I ] − , has S T =3/2. The figure shows the spin arrangement within the complexes as deduced from combined EPR and SQUID measurements. The ferrimagnetic system, [ 1 I ] − , has both Co III spin centers aligned in a common direction, an important step towards building ferromagnetic or ferrimagnetic network solids.