Synthesis, characterization and spectral studies of nitrogen base adducts of bis(O,O '-ditolyldithiophosphato)nickel(II). Crystal structures of Ni[S2P(OC6H4Me-p)(2)](2) center dot C10H8N2 and Ni[S2P(OC6H4Me-o)(2)](2) center dot C14H12N2 center dot C6H6

Bingham, A.L., Drake, J.E., Hursthouse, M.B., Light, M.E., Nirwan, M. and Ratnani, R. (2007) Synthesis, characterization and spectral studies of nitrogen base adducts of bis(O,O '-ditolyldithiophosphato)nickel(II). Crystal structures of Ni[S2P(OC6H4Me-p)(2)](2) center dot C10H8N2 and Ni[S2P(OC6H4Me-o)(2)](2) center dot C14H12N2 center dot C6H6. Polyhedron, 26 (12), 2672-2678. (doi:10.1016/j.poly.2007.01.003).

Abstract

Reactions of Ni[S2P(OR)2]2(R = o-, m- and p-C6H4Me) with nitrogen donor ligands, viz. pyridine (C5H5N or py), 2,2?-bipyridyl (C10H8N2 or bipy) and 2,9-dimethyl-1,10-phenanthroline (C14H12N2 or dmphen) were carried out in benzene to yield green paramagnetic solids. These adducts were characterized by UV–visible and IR spectroscopy, magnetic measurements and, in two cases, by X-ray crystallography, to indicate how the number of donor atoms and steric factors affect the Ni–S bonding. The molecular structures of 2,2?-bipyridylbis {O,O?-di(p-tolyl)dithiophosphate}nickel(II), Ni[S2P(OC6H4Me-p)2]2 · C10H8N2 and 2,9-dimethyl-1,10-phenanthrolinebis{O,O?-di(o-tolyl)dithiophosphate}nickel(II), Ni[S2P(OC6H4Me-o)2]2 · C14H12N2 · C6H6 are described. The geometry around nickel in the bipyridyl adduct is distorted octahedral with NiS4N2 coordination, whereas in the 2,9-dimethyl-1,10-phenanthroline adduct it is trigonal bipyramidal with NiS3N2 coordination in which one dithiophosphate moiety is bidentate and the other is monodentate.

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Contributors

Author: M.E. Light

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