Synthesis, structure and magnetic properties of bis(hexafluoroacetylacetonato)Mn(II) complex with a novel triplet organic radical, 4-N-tert-butylaminoxyl-4 '-nitronylnitroxylbiphenyl

Authors
Kumagai, H Hosokoshi, Y Markosyan, AS Inoue, K
Citation
H. Kumagai et al., Synthesis, structure and magnetic properties of bis(hexafluoroacetylacetonato)Mn(II) complex with a novel triplet organic radical, 4-N-tert-butylaminoxyl-4 '-nitronylnitroxylbiphenyl, POLYHEDRON, 20(11-14), 2001, pp. 1329-1333
Citations number
14
Categorie Soggetti
Inorganic & Nuclear Chemistry
Journal title
POLYHEDRON
ISSN journal
02775387 → ACNP
Volume
20
Issue
11-14
Year of publication
2001
Pages
1329 - 1333
Database
ISI
SICI code
0277-5387(20010530)20:11-14<1329:SSAMPO>2.0.ZU;2-H
Abstract
A novel triplet radical 4-N-tert-butylaminoxyl-4'-(1-oxyl-3-oxide-4,4,5,5-t etramethylimidazolin-2-yl)biphenyl (BIPNNNO) and a metal-radical complex of Mn(II) made up of Mn(hfac)(2) and BIPNNNO were synthesized. The X-ray sing le crystal structural analysis revealed that the complex consists of discre te molecules [Mn(hfac)(2)]. BIPNNNO)(2). Temperature dependence of magnetic susceptibility was analyzed and revealed that antiferromagnetic interactio n is operative between Mn(II) and diradical BIPNNNO to afford S=1/2, ground state. The exchange parameters are compared with those of complexes of Mn( hfac), with different aminoxyl polyradicals. (C) 2001 Elsevier Science Ltd. All rights reserved.