Abstract
Nickel(ii) bis(diphosphine) complexes that contain positioned bases in the second coordination sphere have been found to catalyze the reduction of O 2 with H2 to selectively form water. The complexes also serve as electrocatalysts for the reduction of O2 with the addition of a weak acid. In contrast, a closely related nickel diphosphine complex without the positioned bases is catalytically inactive for O2 reduction. These results indicate that pendant bases in synthetic catalysts for O2 reduction can play a similar role to proton relays in enzymes, and that such relays should be considered in the design of catalysts for multi-electron and multi-proton reactions.
| Original language | English |
|---|---|
| Pages (from-to) | 3001-3010 |
| Number of pages | 10 |
| Journal | Dalton Transactions |
| Volume | 39 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - Mar 19 2010 |
ASJC Scopus subject areas
- Inorganic Chemistry
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Yang, J. Y., Bullock, R. M., Dougherty, W. G., Kassel, W. S., Twamley, B., Dubois, D. L., & Rakowski Dubois, M. (2010). Reduction of oxygen catalyzed by nickel diphosphine complexes with positioned pendant amines. Dalton Transactions, 39(12), 3001-3010. https://doi.org/10.1039/b921245k