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Hydrogen production using cobalt-based molecular catalysts containing a proton relay in the second coordination sphere
Abstract
The cobalt analogue of a highly active nickel electrocatalyst for hydrogen production has been synthesized and characterized as [Co(PPh2NPh2)2(CH3CN)](BF4)2. In the presence of triflic acid in acetonitrile solution, the complex loses one cyclic diphosphine ligand to form [Co(PPh2NPh2)(CH3CN)3](BF4)2, which has been synthesized independently and stucturally characterized. The latter complex serves as an electrocatalyst for hydrogen formation with a turnover frequency of 90 s−1 and an overpotential of 285 mV using bromoanilinium tetrafluoroborate as the acid. A similar cobalt complex with a related diphosphine ligand that does not contain a pendant base is not catalytically active, confirming an important role for the pendant amine in the catalytic reaction.
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Cited by
Electrocatalytic Hydrogen Evolution in Acidic Water with Molecular Cobalt Tetraazamacrocycles
McCrory, C. C. L., Uyeda, C., & Peters, J. C. (2012) · Journal of the American Chemical Society · doi:10.1021/ja210661k · Cited by 351
Singh, W. M., Baine, T., Kudo, S., Tian, S., Ma, X. A. N., Zhou, H., DeYonker, N. J., Pham, T. C., Bollinger, J. C., Baker, D. L., et al. (2012) · Angewandte Chemie · doi:10.1002/ange.201200082 · Cited by 66
Metadata
- Authors
- Jacobsen, G. M., Yang, J. Y., Twamley, B., Wilson, A. D., Bullock, R. M., Rakowski DuBois, M., & DuBois, D. L.
- Venue
- Energy & Environmental Science
- Publisher
- Royal Society of Chemistry (RSC)
- Published
- 2008
- Volume
- 1
- Issue
- 1
- Pages
- 167
- ISSN
- 1754-5692 (ISSN-L)
- 1754-5706
- OpenAlex
- W1999855579
- Cited by
- 189
- References
- 0
- FWCI
- 6.04
- Type
- journal article
- Language
- en
- Open access
- closed
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- CoChat. (2026). Citation check: Hydrogen production using cobalt-based molecular catalysts containing a proton relay in the second coordination sphere. https://app.cochat.ai/papers/10.1039/b805309j
- The paper
- Jacobsen, G. M., Yang, J. Y., Twamley, B., Wilson, A. D., Bullock, R. M., Rakowski DuBois, M., & DuBois, D. L. (2008). Hydrogen production using cobalt-based molecular catalysts containing a proton relay in the second coordination sphere. Energy & Environmental Science. https://doi.org/10.1039/b805309j
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