97919-66-9Relevant academic research and scientific papers
Two-site reactivity in a ligand-bridged cluster. The reaction of Os4(CO)12(μ3-S) with terminal acetylenes
Adams, Richard D.,Wang, Suning
, p. 1902 - 1903 (2008/10/08)
The reaction of the cluster complex Os4-(CO)12(μ3-S), 1, with PhC≡CH yields two noninterconvertible products, Os4(CO)12(μ3-S)[μ4-C=C(Ph)H], 2a, in 46% yield and Os4(CO)12[μ4-η3-SC(Ph)=CH], 3a, in 27% yield. Both products were characterized by IR, 1H NMR, and X-ray diffraction methods. Compound 2a consists of a puckered rhombus of four osmium atoms with a triply bridging sulfido ligand and quadruply bridging phenylvinylidene ligand. Compound 3a consists of a butterfly tetrahedral cluster of four osmium atoms with a novel quadruply bridging SC(Ph)=CH thiolato ligand that was formed by the formation of a carbon-sulfur bond between the sulfido ligand in 1 and the phenyl-substituted carbon atom of the acetylene molecule. The reaction of 1 with MeO2CC≡CH yields only the analogue of 3a.
