Solvent-Driven Reductive Activation of CO 2 by Bismuth: Switching from Metalloformate Complexes to Oxalate Products

In this work, we investigated how the reductive activation of CO with an atomic bismuth model catalyst changes under aprotic solvation. IR photodissociation spectroscopy of mass-selected [Bi(CO ) ] cluster ions was used to follow the structural evolution of the core ion with increasing cluster size....

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Veröffentlicht in:Angewandte Chemie International Edition 2016-11, Vol.55 (48), p.15171-15174
Hauptverfasser: Thompson, Michael C, Ramsay, Jacob, Weber, J Mathias
Format: Artikel
Sprache:eng
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Zusammenfassung:In this work, we investigated how the reductive activation of CO with an atomic bismuth model catalyst changes under aprotic solvation. IR photodissociation spectroscopy of mass-selected [Bi(CO ) ] cluster ions was used to follow the structural evolution of the core ion with increasing cluster size. We interpreted the IR spectra by comparison with density-functional-theory calculations. The results show that CO binds to a bismuth atom in the presence of an excess electron to form a metalloformate ion, BiCOO . Solvation with additional CO molecules leads to the stabilization of a bismuth(I) oxalate complex and results in a core ion switch.
ISSN:1433-7851
1521-3773
DOI:10.1002/anie.201607445