Through-bond magnetic interaction between the 2p spin of the aminoxyl radical and the 3d spin of the metal ions in the complexes of bis(hexafluoroacetylacetonato)-manganese(II) and -copper(II) with 4-(N-tert-butyl-N-oxylamino)-2,2 '-bipyridine
H. Kumada et al., Through-bond magnetic interaction between the 2p spin of the aminoxyl radical and the 3d spin of the metal ions in the complexes of bis(hexafluoroacetylacetonato)-manganese(II) and -copper(II) with 4-(N-tert-butyl-N-oxylamino)-2,2 '-bipyridine, J CHEM S DA, (6), 2000, pp. 911-914
Citations number
23
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS
The crystal and molecular structures of 1 : 1 complexes of bis(hexafluoroac
etylacetonato)-manganese(II), -copper(II) and -zinc(II) with 4-(N-tert-buty
laminoxyl)-2,2'-bipyridine were studied by X-ray single crystal analyses to
show their mononuclear structures in which the bipyridine moieties are coo
rdinated with the metal ions in a cis configuration and the aminoxyl groups
do not take part in the coordination. Their magnetic properties measured o
n a SQUID susceptometer/magnetometer revealed that the manganese(II) and co
pper(II) ions couple with the remote aminoxyl radical through the bipyridin
e ring antiferro- and ferro-magnetically by J/k(B) = -20.2 and +68.7 K, res
pectively.