Tris(bis(trimethylsilyl)amido)uranium: Compounds with tri-, tetra-, and penta-valent uranium

Thesis/Dissertation · Fri Jan 01 04:00:00 EST 1988

OSTI ID:6901817

Stewart, J L

The trivalent uranium compound, tris(bis(trimethylsilyl)amido)uranium, serves as a precursor to new tri-, tetra-, and penta-valent uranium species. The geometry about the uranium atom in the three-coordinate bis(trimethylsilyl)amide compound is pyramidal. Lewis-base coordination compounds of U(N(SiMe{sub 3}){sub 2}){sub 3} with one-to-one ratio of Lewis base to uranium were isolated with pyridine, 4-dimethylaminopyridine, 2,6-Me{sub 2}-C{sub 6}H{sub 3}NC, and triphenylphosphineoxide. Two-to-one coordination compounds were obtained with t-butylnitrile and t-butylisocyanide. Compounds with more sterically demanding bases could not be isolated, presumably due to the steric requirements of the bulky bis(trimethylsilyl)amide ligands. Various reactions of the tris(bis(trimethylsilyl)amido)uranium with AgF, (C{sub 6}H{sub 5}){sub 3}CN{sub 3}, and organoazides are reported. The preparation of the silox compounds U(silox){sub 3}Cl{sub 2},Li and U(silox){sub 4} is reported.

• Research Organization: California Univ., Berkeley, CA (USA)
• OSTI ID: 6901817
• Country of Publication: United States
• Language: English

Related Subjects

38 RADIATION CHEMISTRY, RADIOCHEMISTRY, AND NUCLEAR CHEMISTRY
400702* -- Radiochemistry & Nuclear Chemistry-- Properties of Radioactive Materials
ACTINIDE COMPOUNDS
ALKANES
AMIDES
CHEMICAL PREPARATION
CHEMICAL REACTIONS
HYDROCARBONS
ORGANIC COMPOUNDS
ORGANIC NITROGEN COMPOUNDS
SILICON COMPOUNDS
SYNTHESIS
URANIUM COMPOUNDS