Journal
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
Volume 132, Issue 35, Pages 12397-12403Publisher
AMER CHEMICAL SOC
DOI: 10.1021/ja103588w
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Funding
- Chemical Sciences, Geosciences, and Biosciences Division of the Office of Basic Energy Sciences of the Department of Energy [USDOE/DE-SC002183, USDOE/DE-FG03-86ER13514]
- Swiss National Science Foundation [200020-120007]
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Recent studies of organouranium chemistry have provided unusual pairs of similar polymetallic molecules containing (N)(3-) and (O)(2-) ligands, namely [(C5Me5)U(mu-I)(2)](3)(mu(3)-N), 1, and [(C5Me5)U(mu-I)(2)](3)(mu(3)-O), 2, and chair and boat conformations of [(C5Me5)(2)U(mu-N)U(mu-N-3)(C5Me5)(2)](4), 3. These compounds were analyzed by density functional theory and multiconfigurational quantum chemical studies to differentiate nitride versus oxide in molecules for which the crystallographic data were not definitive and to provide insight into the electronic structure and unique chemical bonding of these polymetallic compounds. Calculations were also performed on [(C5Me5)(2)UN3(mu-N-3)](3), 4, and [(C6F5)(3)BNU(N[Me]Ph)(3)], 5, for comparison with 1 and 3. On the basis of these results, the complex, [(C5Me5)U(mu(3)-E)](8), 6, for which only low-quality X-ray crystallographic data are available, was analyzed to predict if E is nitride or oxide.
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