INOR 38 |
| Fluorinated bis(gem-diol), 1,1,1,5,5,5-hexafluoropentane-2,2,4,4-tetraol (H4hfpt), can be obtained by hydration of hexafluoroacetylacetone (Hhfac). We have shown that in the presence of proton acceptor the tetraol is capable to act as a controlled source of both diketonate and oxo-groups by undergoing a facile cleavage of the two C—O bonds. The first bismuth oxo-diketonate, Bi9O7(hfac)13, has been obtained in quantitative yield using triphenylbismuth as a starting material in reaction with tetraol. The structure of the bismuth oxo-diketonate features metal atoms in two distinctly different chemical and coordination environments: the [Bi6O7] central oxo-core and three Bi(hfac)x arms attached to its periphery. In coordinating solvents this molecule irreversibly dissociates to give Bi(hfac)3 and high-nuclearity bismuth oxo-diketonate clusters. The crystal structure of a remarkable nanosized polyoxometallate having the [Bi38O45]24+ core will be discussed. |
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Main Group
9:00 AM-11:20 AM, Sunday, 10 September 2006 Moscone Center -- Room 307, Oral
Division of Inorganic Chemistry |