期刊
INORGANIC CHEMISTRY
卷 53, 期 19, 页码 10240-10247出版社
AMER CHEMICAL SOC
DOI: 10.1021/ic501267f
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资金
- U.S. Department of Energy, Office of Basic Energy Sciences, Chemical Sciences, Biosciences, and Geosciences Division [DE-FG02-09ER16067]
Reaction of KH with elemental tellurium, in the presence of 18-crown-6, results in the formation of the ditelluride, [K(18-crown-6)](2)[Te-2] (1), in good yield. Similarly, reaction of KH with elemental selenium, in the presence of 18-crown-6, results in the formation of [K(18-crown-6)](2)[Se-4] (4). Both 1 and 4 are capable of chalcogen atom transfer to U(III). For example, addition of 0.5 equiv or 1 equiv of [K(18-crown-6)](2)[Te-2] (1) to [U(NR2)(3)] (R = SiMe3) or [U(I)(NR2)(3)], respectively, results in the formation of the new U(IV) tellurides, [K(18-crown-6)][U(Te)(NR2)(3)] (2), and [K(18-crown-6)][U(eta(2)-Te-2)(NR2)(3)] (3), in moderate yields, while addition of 0.5 equiv of [K(18-crown-6)](2)[Se-4] (4) to [U(NR2)3] results in the formation of the U(IV) diselenide, [K(18-crown-6)][U(eta(2)-Se-2)(NR2)(3)] (5). Interestingly, 5 can be converted into the monoselenide [K(18-crown-6)][U(Se)(NR2)(3)] (6) via reaction with Ph3P.
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