Coordination chemistry of silanedithiolato ligands derived from cyclotrisilathiane: Synthesis and structures of complexes of iron(II), cobalt(II), palladium(II), copper(I), and silver(I)

Takashi Komuro, Tsukasa Matsuo, Hiroyuki Kawaguchi, Kazuyuki Tatsumi

Research output: Contribution to journalArticle

31 Citations (Scopus)

Abstract

The coordination chemistry of chelating silanedithiolato ligands has been investigated on Fe(II), Co(II), Pd(II), Cu(I), and Ag(I). Treatment of M(OAc)2 (M = Fe, Co, Pd) with cyclotrisilathiane (SSiMe 2)3 in the presence of Lewis bases resulted in formation of Fe(S2SiMe2)(PMDETA) (1), Fe(S2SiMe 2)(Me3TACN) (2), Co(S2SiMe2)(PMDETA) (3), and Pd(S2SiMe2)(PEt3)2 (4) (PMBETA = N,N,N′,N′,N″-pentamethyldiethylenetriamine; Me 3TACN = 1,4,7-trimethyl-1,4,7-triazacyclononane). The analogous reactions of M(OAc) (M = Cu, Ag) in the presence of PEt3 gave rise to the dinuclear complexes M2{(SSiMe2) 2S}(PEt3)3 [M = Cu (5), Ag (6)]. Complexes were characterized in solution by 1H, 31P{1H}, and 29Si{1H} NMR and in the solid state by single-crystal X-ray diffraction. Mononuclear complexes 1-3 have a four-membered MS 2Si ring, and these five-coordinate complexes adopt trigonal-bipyramidal (for the PMDETA adducts) or square-pyramidal (for the Me3TACN adduct) geometries. In dimer 6, the (SSiMe2) 2S2- silanedithiolato ligand bridges two metal centers, one of which is three-coordinate and the other four-coordinate. The chelating effect of silanedithiolato ligands leads to an increase in the stability of silylated thiolato complexes.

Original languageEnglish
Pages (from-to)5340-5347
Number of pages8
JournalInorganic chemistry
Volume42
Issue number17
DOIs
Publication statusPublished - 2003 Aug 25
Externally publishedYes

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Inorganic Chemistry

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