Journal
CHEMICAL COMMUNICATIONS
Volume 48, Issue 69, Pages 8634-8636Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c2cc34150f
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Funding
- BMBF [02 NUK 012C]
- DFG [SFB 583, ME1754/2-1]
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The new neopentyl (Neop)-substituted tris(aryloxide) U(III) complex [(((ArO)-Ar-Neop,Me)(3)tacn)U-III] reacts with CO2 to form CO and the bridging carbonate complex [{(((ArO)-Ar-Neop,Me)(3)tacn)U-IV}(2)(mu-CO3)]. The uranium(IV) bridging oxo [{(((ArO)-Ar-Neop,Me)(3)tacn)U-IV}(2)(mu-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 KC8 as reductant, [(((ArO)-Ar-Neop,Me)(3)tacn)U-III] engages in a synthetic cycle, in which CO2 is converted to CO and CO32-.
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