Dithiolene-like nickel complexes of the methyl ester of dithiocarbazic acid and its N3 phenyl- and benzyl-substituted derivatives. Crystal and molecular structure of [ni{PhNC6H4NNC(S)SMe}(NCS)]

The properties of the complexes [Ni{NHNC(S)SMe}2], [Ni{NPhNC(S)SMe}2], and [Ni{N(CH2Ph)NC(S)SMe}2] have been investigated. The electronic, i.r., e.s.r., and X-ray photoelectron spectra have been studied; electrochemical studies in solution have been performed. The oxidation state of nickel is essentially +2 in all the compounds. The X-ray crystal structure of [Ni{PhNC6H4NNC(S)SMe}(NCS)], which forms on heating [Ni{NPhNC(S)SMe}2], was determined.