908585-68-2Relevant academic research and scientific papers
Cluster fragmentation and facile cleavage of phenyl groups from the SnPh3 ligand in reactions of Os3(CO) 11(SnPh3)(μ-H) with CO and HSnPh3
Adams, Richard D.,Captain, Burjor,Zhu, Lei
, p. 4183 - 4187 (2006)
Two new cluster complexes, Os3(CO)12(Ph)(μ 3-SnPh), 8 (35% yield), and Os4(CO)16(μ 4-Sn), 9 (10% yield), were formed when the complex Os 3(CO)11(SnPh3)(μ-H), 6, was heated to reflux in toluene solvent under a CO atmosphere. Compound 8 was transformed to 9 in 28% yield when a solution in octane solvent was heated to reflux under a CO atmosphere. Biphenyl was a coproduct in this reaction. Compound 8 contains three osmium atoms with a triply bridging SnPh group. The triosmium cluster has opened and there is only one Os-Os bond between the three osmium atoms. Compound 9 contains two Os2(CO)8 groups held together by a central quadruply bridging tin atom, giving an overall bow-tie structure for the five metal atoms. Two other new compounds, Os2(CO) 6(μ-SnPh2)2(SnPh3)2, 10, and HOs(CO)4(SnPh3), 11, were formed in 51% and 20% yields, respectively, from the reaction of 6 with HSnPh3. Compound 10 contains only two osmium atoms linked by an Os-Os bond and two bridging SnPh2 ligands. Each osmium atom also contains one terminal SnPh 3 ligand. Compound 11 contains only one osmium atom. It has one SnPh3 ligartd and a hydrido ligand in cis position in the six-coordinate pseudo-octahedral complex. All four new compounds were characterized by single-crystal X-ray diffraction analysis.
