PHOSPHINE-PARTICIPATED FORMATION AND CRYSTAL-STRUCTURES OF NICKEL-COMPLEXES WITH 2-SULFANYLPHENOL AND PHOSPHINE-LIGANDS

Neutral tri- and mono-nuclear complexes [Ni-3(OC6H4S)(2)(HOC6H4S)(2)(P Bu(3)(n))(2)]. 2EtOH 1 and [Ni(OC6H4S)-(PMe(2)Ph)(2)] 2 of 2-sulfanylp henol were obtained in the presence of a phosphine in EtOH solutions. and their crystal structures determined. Complex 1 is made up of three nickel ions chelated and bridged by two OC6H4S2- dianions in ObSt fas hion and two HOC6H4S- monoanions in HOtSb fashion, where the central n ickel(lr) atom has an elongated octahedral geometry whereas the two at the sides have square-planar surroundings. Tn 2 the nickel(II) atom i s located in a square-planar environment, chelated by a OC6H4S2- diani on in OtSt mode. Complex 1 is paramagnetic and its magnetic behaviour is explained by single-ion anisotropy.