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- Title
Binuclear Co(II), Ni(II), and Cu(II) Hexafluoroacetylacetonates with Spin-Labeled Nitrophenols.
- Authors
Kuznetsova, О. V.; Romanenko, G. V.; Letyagin, G. A.; Bogomyakov, A. S.
- Abstract
The interaction of mono- and tetranuclear hexafluoroacetylacetonates [M4(hfac)4(OMe)4(MeOH)4] (where М = Co, Ni) and [Cu4(hfac)4(OMe)4] with spin-labeled nitrophenols - nitronyl nitroxide 2-(2-hydroxy-5-nitrophenyl)-4,4,5,5-tetramethyl-4,5-dihydro-1H-imidazole-3-oxide-1-oxyl (HL1) or with corresponding iminonitroxide (HL2) - is found to lead to the formation of solvates of binuclear complexes: [Co2(hfac)2(L2)2(H2O)2], [Ni2(hfac)2(L1)2(H2O)2], [Ni2(hfac)2(L2)2(H2O)], [Cu2(hfac)2(L1)2]. The magnetochemical analysis reveals that exchange interactions between metal ions and coordinated nitronyl nitroxides are strongly feroomagnetic and result in the compensation of spins. Imino nitroxide L2 substitution for nitronyl nitroxide L1 changes the character of exchange interactions in the heterospin molecule to the ferromagnetic one.
- Subjects
COPPER; NITROXIDES; NITROPHENOLS; METAL ions; MAGNETIC properties; SINGLE crystals
- Publication
Journal of Structural Chemistry, 2023, Vol 64, Issue 8, p1470
- ISSN
0022-4766
- Publication type
Article
- DOI
10.1134/S0022476623080115