CRYSTAL-STRUCTURE OF THE NI(III) COMPLEX WITH THE NITROXYL RADICAL DERIVATIVE OF 3-IMIDAZOLINE AND 1-BUTANOL

The crystal structure was found for the Ni(II) complex with the nitrox yl radical derivative of 3-imidazoline L = C10H13N2O(2)F(3) and 1-buta nol C4H9OH with the formula NiL(2)(n-C4H9OH)(2) (a = 10.907(2), b = 16 .769(5), c = 12.321(3) Angstrom, alpha = 96.33(2), beta = 120.36(1), g amma = 106.3(2)degrees, V = 1780.7(7) Angstrom(3), d(calc) = 1.32 g/cm (3), space group P1, Z = 2, R = 0.072). The structure was molecular in nature. Octahedral coordination of the nickel ion was found with the oxygen and nitrogen atoms of two bidentate L in the equatorial plane [ Ni-O, 2.13 Angstrom (av.); Ni-N, 1.99 Angstrom (av.)] and the oxygen a toms [Ni-O-OH, 2.13 Angstrom (av.)] of the OH groups of the alcohol mo lecules in the axial positions. The rather strong hydrogen bonds betwe en the coordinated OH groups of the alcohol and oxygen atoms of the dr op N-O groups of the adjacent complex molecules (O...O, 2.78-2.84 Angs trom) delineate layers, in which the distances between the paramagneti c sites of adjacent molecules Ni...O- are shorter than the intramolecu lar distances and much shorter than the analogous distances between ad jacent layers. On the whole, this structure is similar to those of ana logous complexes with other alcohols previously studied.