Journal of the American Chemical Society p. 6931 - 6937 (1986)
Update date:2022-08-03
Topics:
Laugier, J.
Rey, P.
Benelli, C.
Gatteschi, D.
Zanchini, C.
A stable adduct was isolated from copper(II) chloride and the stable free radical 2-phenyl-4,4,5,5-tetramethylimidazoline-1-oxyl 3-oxide.THe stoichiometry of the adduct is 1:2, and a crystal structure analysis has shown the copper ion to be four planar coordinated by two chlorine atoms and two oxygen (nitroxyl) atoms.The nitroxyl ligands are bound with a short Cu-O distance of 1.988 (1) Angstroem.Magnetic measurements show that this material is in a doublet state from 30 to 300 K.At lower temperature a spin pairing process became operative.Crystal data: monoclinic, P21/n, a=11.988 (4) Angstroem, b=10.878 (3) Angstroem, c=11.788 (4) Angstroem, β=106.14 (2) grad, Z=2.
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