Übergangsmetallkomplexe mit Schwefelliganden, LXXXVI. Säure-Base- und Redox-Reaktionen von [Ni(′MeS2′)2] mit H+, PMe3, NO+ und NO. Röntgenstrukturanalyse von [Ni(PMe3)(′MeS2′)2] (′MeS2′ = o-(Methylthio)thiophenolat(1–)) / Transition-Metal Complexes with Sulfur Ligands, LXXXVI. Acid-Base and Redox Reactions of [Ni(′MeS2')2] with H+, PMe3, NO+ and NO. X-Ray Structure Determination of [Ni(PMe3)(′MeS2′)2] (′MeS2′ = o-(methylthio)thiophenolate(1–))

Abstract

In order to elucidate specific properties of nickel-sulfur complexes, addition and substitution reactions of [Ni(′MeS2′)2] (1) were investigated. 1 is rapidly hydrolyzed by aqueous HCl yielding ′MeS2′–H and Ni(II) ions. 1 coordinates phosphines as coligands, thioether donors decoordinate, however, simultaneously. The monophosphine complex [Ni(PMe3)(′MeS2′ )2] (2) was characterized by X-ray structure determination. It contains a square-planar NiS3P unit and one decoordinated thioether group. Redox reactions of 1 occur with NO+ and NO, yielding the binuclear nitrosyl complexes cis- and trans-[Ni(NO)(′MeS2′)]2 (3) and the disulfide [′MeS2']2•