Uranium-mediated reductive conversion of CO(2) to CO and carbonate in a single-vessel, closed synthetic cycle |
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Authors: | Anna-Corina Schmidt Alexey V Nizovtsev Andreas Scheurer Frank W Heinemann Karsten Meyer |
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Institution: | Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander-University of Erlangen-Nuremberg, Egerlandstr. 1, 91058 Erlangen, Germany. karsten.meyer@chemie.uni-erlangen.de. |
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Abstract: | The new neopentyl (Neop)-substituted tris(aryloxide) U(iii) complex (((Neop,Me)ArO)(3)tacn)U(III)] reacts with CO(2) to form CO and the bridging carbonate complex {(((Neop,Me)ArO)(3)tacn)U(IV)}(2)(μ-CO(3))]. The uranium(iv) bridging oxo {(((Neop,Me)ArO)(3)tacn)U(IV)}(2)(μ-O)] has been determined to be the intermediate in this reaction. For the first time, both U(iv) complexes can be reduced back to the U(iii) starting material. Thus, with KC(8) as reductant, (((Neop,Me)ArO)(3)tacn)U(III)] engages in a synthetic cycle, in which CO(2) is converted to CO and CO(3)(2-). |
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