Reaction of [Os3H2(CO)10] with the diyne Me3SiC2C2SiMe3 and the reactivity of the products towards [Co2(CO)8]: The X-ray structures of [Os3(μ-H)(CO)10 {μ-η12-HC2 (SiMe3)C2(SiMe3)}],[Os3

Lionel P. Clarke, John E. Davies, Paul R. Raithby, Moira Ann Rennie, Gregory P. Shields, Emma Sparr

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28 Citations (Scopus)


The reaction of [Os3H2(CO)10] with Me3SiC2C2SiMe3 affords both [Os3(μ-H) (CO)10{μ-η12-HC 2(SiMe3)C2(SiMe3)}] (1) and [Os3(μ-CO)(CO)932-Me3SiC2C2SiMe3)] (2) in good yield, 2 being favoured with an excess of diyne. In 1, one edge of the triosmium unit is bridged by the vinyl moiety of a transformed bis(trimethylsilyl)-1,4-butadiyne ligand that has undergone a hydride transfer and a 1,2-trimethylsilyl shift. Compound 2 is selectively desilylated in methanol to produce a single isomer of the known cluster [Os3(μ-CO)(CO)932-HC2C2SiMe3}] (3). Whereas reaction of 3 with [Co2(CO)8] results in the production of the previously reported cluster [Os332-:μ-η 2-(Me3SiC2C2H)[Co 2(CO)6]}(μ-CO)(CO)9] (4) and a second product [Os3(μ-H)(CO)9312-;μ-η2-Me3SiC 2C2[Co2(CO)6]}] (5), the reaction of 1 and 2 results in recovery of the starting material or transfer of the alkyne ligand to the Co2 unit. Compound 4 undergoes a transformation to 5 in visible light. All the cluster complexes have been characterized spectroscopically, and the solid-state structures of 1, 2 and 5 have been determined by single-crystal X-ray diffraction.

Original languageEnglish
Pages (from-to)169-176
Number of pages8
JournalJournal of Organometallic Chemistry
Issue number1-2
Publication statusPublished - 8 Sep 2000


  • Carbonyl cluster
  • Cobalt
  • Diyne
  • Osmium
  • X-ray crystal structure

ASJC Scopus subject areas

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


Dive into the research topics of 'Reaction of [Os<sub>3</sub>H<sub>2</sub>(CO)<sub>10</sub>] with the diyne Me<sub>3</sub>SiC<sub>2</sub>C<sub>2</sub>SiMe<sub>3</sub> and the reactivity of the products towards [Co<sub>2</sub>(CO)<sub>8</sub>]: The X-ray structures of [Os<sub>3</sub>(μ-H)(CO)<sub>10</sub> {μ-η<sup>1</sup>-η<sup>2</sup>-HC<sub>2</sub> (SiMe<sub>3</sub>)C<sub>2</sub>(SiMe<sub>3</sub>)}],[Os<sub>3</sub>'. Together they form a unique fingerprint.

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