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Xanthate complexes of nickel with nitrogen donor ligands. Part V

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Abstract

Nickel(II) xanthate complexes of general formula, [Ni(Rxa)2(L)] [R = i-Pr, i-Am, xa = OCS 2, L = 4,7-diphenyl-1,10-phenanthroline(baphen), 4,4′-dimethyl-2,2′-bipyridyl (me2bpy), 2-9-dimethyl-1,10-phenanthroline(neo) or trans-1,2-diaminocyclohexane (dch)] and [Ni(Rxa)(cyclam)](Rxa) (= 1,4,8,11-tetraazacyclotetradecane) have been synthesized and characterized by elemental analyses, i.r. and electronic spectroscopy, magnetic and conductivity measurements. The complexes with cyclam were studied by cyclic voltammetry. Values of magnetic moments at room temperature lie within the 3.25–3.51 B.M. range and thus indicate the presence of two unpaired electrons, except for the complexes with cyclam, where the anomalous values of 1.76 and 1.74 B.M. were obtained in respect to the nickel(II) complexes. Magnetic susceptibility data for [Ni(i-Prxa)(cyclam)](i-Prxa) were measured over the 79–298 K range and indicate no exchange interaction between paramagnetic nickel(II) centres.

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Trávníček, Z., Walla, J., Kvítek, L. et al. Xanthate complexes of nickel with nitrogen donor ligands. Part V. Transition Metal Chemistry 24, 633–637 (1999). https://doi.org/10.1023/A:1006923722773

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