In:
Canadian Journal of Chemistry, Canadian Science Publishing, Vol. 78, No. 3 ( 2000-03-01), p. 322-327
Abstract:
Bis(hexafluoroacetylacetonate)cobalt(II), Co(hfac) 2 , reacted with the nitronyl nitroxide radical 2-(4-methylphenyl)-4,4,5,5-tetramethylimidazoline-1-oxyl-3-oxide, NITPhMe, to yield an octahedral adduct of formula Co(hfac) 2 (NITPhMe) 2 . The X-ray crystal structure shows that it crystallizes in the space group P1, with a = 9.837(3), b = 11.618(3), c = 20.502(4) Å, α = 81.22(2), β = 87.93(2), γ = 72.24(3)º, V = 2205(1) Å 3 , Z = 2. The mechanism of ferromagnetic exchange between cobalt(II) and the radical can be qualitatively understood in terms of a charge-transfer interaction (J being 25.7 cm -1 , the Hamiltonian is written in the form H = -2J(S Rad1 ·S Co + S Co ·S Rad2 )).Key words: crystal structure, cobalt(II) complex, nitronyl nitroxide, magnetic property.
Type of Medium:
Online Resource
ISSN:
0008-4042
,
1480-3291
Language:
English
Publisher:
Canadian Science Publishing
Publication Date:
2000
detail.hit.zdb_id:
1482256-8
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