Year: 2016
Type: article
Abstract: General reductive silylation of the UO22+ cation occurs readily in a one‐pot, two‐step stoichiometric reaction at room temperature to form uranium(IV) siloxides. Addition of two equivalents of an alkylating reagent to UO2X2(L)2 (X=Cl, Br, I, OTf; L=triphenylphosphine oxide, 2,2′‐bipyridyl) followed by two equivalents of a silyl (pseudo)halide, R3Si‐X (R=aryl, alkyl, H; X=Cl, Br, I, OTf, SPh), cleanly affords (R3SiO)2UX2(L)2 in high yields. Support is included for the key step in the process, reduction of UVI to UV. This procedure is applicable to a wide range of commercially available uranyl salts, silyl halides, and alkylating reagents. Under this protocol, one equivalent of SiCl4 or two equivalents of Me2SiCl2 results in direct conversion of the uranyl to uranium(IV) tetrachloride. Full spectroscopic and structural characterization of the siloxide products is reported.
Institutions: Purdue University West Lafayette, Youngstown State University
Language: English
Subfield: Inorganic Chemistry
Field: Chemistry
Domain: Physical Sciences
Open Access status: green
OpenAlex ID: W2562290362