title: Uranium-mediated reductive conversion of CO2 to CO and carbonate in a single-vessel, closed synthetic cycle.
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-).
authors: Department of Chemistry and Pharmacy, Inorganic Chemistry, Friedrich-Alexander-University of Erlangen-Nuremberg, Egerlandstr. 1, 91058 Erlangen, Germany.
authors: Anna-Corina
authors: AC
authors: Schmidt
authors: Alexey V
authors: AV
authors: Nizovtsev
authors: Andreas
authors: A
authors: Scheurer
authors: Frank W
authors: FW
authors: Heinemann
authors: Karsten
authors: K
authors: Meyer
mesh_terms: D002245:Carbon Dioxide / Q000737:chemistry*; D002248:Carbon Monoxide / Q000138:chemical synthesis*; D056831:Coordination Complexes / Q000138:chemical synthesis / Q000737:chemistry*; D008024:Ligands; D008958:Models, Molecular; D010084:Oxidation-Reduction; D014501:Uranium / Q000737:chemistry*
chemical_list: D056831:Coordination Complexes; D008024:Ligands; D002245:Carbon Dioxide; D014501:Uranium; D002248:Carbon Monoxide