Aggregation of Octahedral Thiolato Complexes by Forming Sulfur-Bridged Structures with Transition Metal Ions

  • Takumi Konno
    Department of Chemistry, Graduate School of Science, Osaka University

説明

<jats:title>Abstract</jats:title> <jats:p>The main developments in rational construction of chiral metallo-aggregates based on octahedral metal complexes with 2-aminoethanethiolate (aet) or l-cysteinate (l-cys), as well as their functionality as an S-donating chiral metalloligand, are reviewed in this paper. The reactions of the tris(thiolato)-type fac(S)-[M(aet or l-cys-N,S)3]0 or 3− (M = CoIII, RhIII, IrIII) with transition metal ions gave a variety of S-bridged metallo-aggregates, the structures and chiral properties of which are highly dependent on the nature of the reacting metal ions. The aggregation of the bis(thiolato)-type cis(S)-[Co(aet)2(en)]2+ was also performed through the replacement of a NiII ion in [Ni{Co(aet)2(en)}2]4+ by other transition metal ions. While aggregation of these tris(thiolato)- and bis(thiolato)-types of octahedral units commonly produced discrete S-bridged polynuclear structures, one-dimensional and two-dimensional extended polymeric structures, besides a discrete trinuclear structure, were constructed by the reactions of the mono(thiolato)-type [Co(aet or l-cys-N,S)(en)2]2+ or + with silver(I) ion, because of the adoption of μ3-thiolato bridging mode and/or the coordination ability of the free carboxylate group.</jats:p>

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