A Heterobimetallic Complex With an Unsupported Uranium(III)-Aluminum(I) Bond: (CpSiMe3)3U-AlCp* (Cp* = C5Me5)

Journal Article · Wed Jul 23 00:00:00 EDT 2008 · Journal of the American Chemical Society

DOI:https://doi.org/10.1021/ja8042382· OSTI ID:950845

Minasian, Stefan; Krinsky Ph D, Jamin; Williams, Valerie; Arnold Ph D, John

The discovery of molecular metal-metal bonds has been of fundamental importance to the understanding of chemical bonding. For the actinides, examples of unsupported metal-metal bonds are relatively uncommon, consisting of Cp{sub 3}U-SnPh{sub 3}, and several actinide-transition metal complexes. Traditionally, bonding in the f-elements has been described as electrostatic; however, elucidating the degree of covalency is a subject of recent research. In carbon monoxide complexes of the trivalent uranium metallocenes, decreased {nu}{sub CO} values relative to free CO suggest that the U(III) atom acts as a {pi}-donor. Ephritikhine and coworkers have demonstrated that {pi}-accepting ligands can differentiate trivalent lanthanide and actinide ions, an effect that renders this chemistry of interest in the context of nuclear waste separation technology.

• Research Organization: Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States)
• Sponsoring Organization: Chemical Sciences Division
• DOE Contract Number: DE-AC02-05CH11231
• OSTI ID: 950845
• Report Number(s): LBNL-1651E; JACSAT; TRN: US0902064
• Journal Information: Journal of the American Chemical Society, Journal Name: Journal of the American Chemical Society; ISSN 0002-7863
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
07 ISOTOPE AND RADIATION SOURCES
12 MANAGEMENT OF RADIOACTIVE AND NON-RADIOACTIVE WASTES FROM NUCLEAR FACILITIES
38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
ACTINIDES
ATOMS
BONDING
CARBON MONOXIDE
CHEMISTRY
COVALENCE
RADIOACTIVE WASTES
RARE EARTHS
URANIUM
Uranium Aluminum Actinide Metal-Metal Bonding