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Reactivity of a triamidoamine complex of trivalent uranium
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UNSPECIFIED (2002) Reactivity of a triamidoamine complex of trivalent uranium. JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS (7). pp. 1423-1428. doi:10.1039/b108584k ISSN 1472-7773.
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Official URL: http://dx.doi.org/10.1039/b108584k
Abstract
Reduction of [U(NN'(3))I] [NN'(3) = N(CH2CH2NSiMe2But)(3)] with potassium in pentane gives the purple trivalent monomer [U(NN'(3))] in good yield, this compound having previously been synthesised via fractional vacuum sublimation of mixed-valent [{U(NN'(3))}(2)(mu-Cl)]. The magnetic susceptibility of this compound is consistent with the presence of U(III) centres, and this is confirmed by a characteristic near IR spectrum. Its reactions with Lewis bases to give e.g. [U(NN'(3))(Py)] and [U(NN'(3))(HMPA)] are reported, along with the molecular structure of the latter. The complex [U(NN'3)] is readily oxidised, imido and hydrazido complexes being formed readily by reaction with trimethylsilyl-azide and -diazomethane, respectively. The reaction with methylene trimethylphosproane however led to the formation of an addition compound [U(NN'(3))(CH2PMe3)]. Reaction of this latter complex with air gave a few crystals of the unusual hydroxo complex [U(NN'(3))(OH)(CH2PMe3)] which was structurally characterised. Reaction of [U(NN'(3))(CH2PMe3)] with trimethylamine N-oxide gave pentavalent [U(NN'(3))(O)], or perhaps a dimer thereof. The latter complex reacted with [U(NN'(3))] to give the bridging oxo complex [{U(NN'(3))}(2)(mu-O)] which could also be prepared directly by reaction of trimethylamine N-oxide with [U(NN'(3))].
Item Type: | Journal Article | ||||
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Subjects: | Q Science > QD Chemistry | ||||
Journal or Publication Title: | JOURNAL OF THE CHEMICAL SOCIETY-DALTON TRANSACTIONS | ||||
Publisher: | ROYAL SOC CHEMISTRY | ||||
ISSN: | 1472-7773 | ||||
Official Date: | 7 April 2002 | ||||
Dates: |
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Number: | 7 | ||||
Number of Pages: | 6 | ||||
Page Range: | pp. 1423-1428 | ||||
DOI: | 10.1039/b108584k | ||||
Publication Status: | Published |
Data sourced from Thomson Reuters' Web of Knowledge
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