Reactions of [Os3(CO)10(MeCN)2] with ethynyl thiophenes: The formation of linked clusters

Birte Ahrens, Lionel P. Clarke, Neil Feeder, Muhammad S. Khan, Peiyi Li, James N. Martin, Paul R. Raithby*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

7 Citations (Scopus)

Abstract

The reaction of 2 equiv. of [Os3(CO)10(MeCN)2] with R-C{triple bond, long}C-L-C{triple bond, long}C-R (R = H, L = (C4H2S); R = SiMe3, L = (C4H2S-C4H2S), (C4H2S-C4H2S-C4H2S), (C4H2S)-(C14H8)-(C4H2S)) affords the series of linked clusters [{Os3(CO)10}(HC{triple bond, long}C(C4H2S)C{triple bond, long}CH){Os3(CO)10}] (1), [{Os3(CO)10}(Me3SiC{triple bond, long}C(C4H2S-C4H2S)C{triple bond, long}CSiMe3){Os3(CO)10}] (2), [{Os3(CO)10}(Me3SiC{triple bond, long}C(C4H2S-C4H2S-C4H2S)C{triple bond, long}CSiMe3){Os3(CO)10}] (4) and [{Os3(CO)10}(Me3SiC{triple bond, long}C(C4H2S)-(C14H8)-(C4H2S)C{triple bond, long}CSiMe3){Os3(CO)10}] (6) as the major products. The complexes have been characterised by a range of spectroscopic methods and, in the case of 1 and 2 by single crystal X-ray crystallography. The alkyne groups cap the osmium triangles in the expected μ32-||-bonding mode and each triangle is coordinated by nine terminal and one μ2-carbonyl group. Solution UV-Vis spectra of the complexes were similar to those observed for the free ligands consistent with there being little delocalisation between the cluster units and the thiophene groups.

Original languageEnglish
Pages (from-to)3117-3124
Number of pages8
JournalInorganica Chimica Acta
Volume361
Issue number11
DOIs
Publication statusPublished - Jul 27 2008

Keywords

  • Alkynes
  • Osmium clusters
  • Thiophenes
  • X-ray crystal structures

ASJC Scopus subject areas

  • Biochemistry
  • Inorganic Chemistry
  • Physical and Theoretical Chemistry
  • Materials Chemistry

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