Rational construction of chiral octanuclear metallacycles consisting of octahedral Co(III), square-planar Pd(II), and linear Au(I) or Ag(I) ions

Takumi Konno, Yu Chikamoto, Ken ichi Okamoto, Tadashi Yamaguchi, Tasuku Ito, Masakazu Hirotsu

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70 Citations (Scopus)


Octahedral fac(S)-[Con(III)(aet)3] molecules (aet = NH2CH2CH2S-) react with square-planar Pd(II) ions to form a sulfur-bridged Co2/(III)Pd(II) trinuclear complex [Pd{Co(aet)3}2]2+, accompanied by the geometrical isomerization from fac(S) to met(S). This complex was found to act as a sulfur-donating trinuclear-metalloligand toward linear Au(I) and Ag(I) ions to afford Co4/(III)Pd2/(II)M2/(I) metallacycles with 16 chiral centers, [M2/(I){Pd(II)[Co(III)(aet)3]2}2]6+ (M = Ag, Au (1)), which were successfully resolved into the (Δ)4(R)12 and (Λ)4(S)12 enantiomers.

Original languageEnglish
Pages (from-to)4098-4101
Number of pages4
JournalAngewandte Chemie - International Edition
Issue number22
Publication statusPublished - 2000 Nov 17
Externally publishedYes



  • Circular dichroism
  • Cobalt
  • Enantiomeric resolution
  • Metallacycles
  • S ligands

ASJC Scopus subject areas

  • Catalysis
  • Chemistry(all)

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