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| author | Robert Edward Sommerhalter |
| title | New Synthetic Approaches to Triosmium Decacarbonyl Bisethoxide and the Systematic Design of Linked Triosmium Clusters via Bridging Diols |
| abstract |
With the goal of developing systematic syntheses of linked triosmium carbonyl clusters, we report the substitution reactions of the dibridged cluster
Os3(CO)10(μ2-OEt)2 with the bifunctional ligand 1,5-pentanediol. Reaction of
Os3(CO)10(μ2-OEt)2 with 1,5-pentanediol affords the cluster
Os3(CO)10(μ2-O(CH2)5OH)2 as the major product. Over extended reaction periods, quantitative conversion
to the cluster H4Os4(CO)12 is observed. Linking of two triosmium carbonyl clusters via the 1,5-pentanediol bridging ligands has been
achieved in the reaction of Os3(CO)10(μ2-O(CH2)5OH)2 with one molar equivalent of
Os3(CO)10(μ2-OEt)2. A secondary product of this reaction has been characterized spectroscopically and is believed to be an
intermediate in the formation of H4Os4(CO)12. A synthetic route to Os3(CO)10(μ2-OEt)2 via
di-halogenated cluster intermediate Os3(CO)12X2 or Os3(CO)10(μ2-X)2 (X = Cl, Br, I)
is also reported.
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| school | The College of Liberal Arts, Drew University |
| degree | B.A. (2016) |
| advisor | Mary-Ann Pearsall |
| committee | Steve Surace
Alan Rosan
Summer Harrison |
| full text | RESommerhalter.pdf |
| |
