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(5,10,15,20-Tetramethylporphyrinato)cobalt(II):  A Remarkably Active Catalyst for the Electroreduction of O_2 to H_2O

Shi, Chunnian and Anson, Fred C. (1998) (5,10,15,20-Tetramethylporphyrinato)cobalt(II):  A Remarkably Active Catalyst for the Electroreduction of O_2 to H_2O. Inorganic Chemistry, 37 (5). pp. 1037-1043. ISSN 0020-1669. http://resolver.caltech.edu/CaltechAUTHORS:20180525-140420261

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Abstract

Unlike most simple, monomeric cobalt porphyrins, the cobalt tetramethylporphyrin identified in the title catalyzes the electroreduction of O_2 to H_2O instead of H_2O_2. On graphite electrodes, coatings of the porphyrin prepared by irreversible adsorption from chloroform solutions catalyze the electroreduction of O_2 in aqueous HClO_4 at unusually positive potentials. Both the title porphyrin and the corresponding unsubstituted cobalt porphine are argued to derive their activity as four-electron reduction catalysts from their propensity to form dimers (or higher aggregates) in solution and, presumptively, on the surface of graphite electrodes.


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https://dx.doi.org/10.1021/ic971255pDOIArticle
https://pubs.acs.org/doi/suppl/10.1021/ic971255pPublisherSupporting Information
Alternate Title:(5,10,15,20-Tetramethylporphyrinato)cobalt(II):  A Remarkably Active Catalyst for the Electroreduction of O2 to H2O
Additional Information:© 1998 American Chemical Society. Received October 10, 1997. This work was supported by the National Science Foundation. Dr. Beat Steiger contributed a number of very helpful suggestions.
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Record Number:CaltechAUTHORS:20180525-140420261
Persistent URL:http://resolver.caltech.edu/CaltechAUTHORS:20180525-140420261
Official Citation:(5,10,15,20-Tetramethylporphyrinato)cobalt(II):  A Remarkably Active Catalyst for the Electroreduction of O2 to H2O Chunnian Shi and Fred C. Anson Inorganic Chemistry 1998 37 (5), 1037-1043 DOI: 10.1021/ic971255p
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:86639
Collection:CaltechAUTHORS
Deposited By: George Porter
Deposited On:29 May 2018 14:41
Last Modified:29 May 2018 14:41

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