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Issue 3, 2010
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Oxygen reduction reactivity of cobalt(II) hangman porphyrins

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Cobalt(II) hangman porphyrins are delivered from easily available starting materials, in two steps, in good yields, and with abbreviated reaction times. Selected compounds from a library of Co(II) hangman porphyrins immobilized on multiwall carbon nanotubes establish that the four-electron four-proton catalytic reduction of oxygen to water in aqueous solution can be achieved at the single cobalt center of the hangman platform. Reaction trends within the library reveal that the selective reduction of O2 to H2O occurs at electron deficient hangman porphyrin platforms possessing a distal group that is capable of proton transfer.

Graphical abstract: Oxygen reduction reactivity of cobalt(ii) hangman porphyrins

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The article was received on 27 Apr 2010, accepted on 29 May 2010 and first published on 19 Jul 2010

Article type: Edge Article
DOI: 10.1039/C0SC00281J
Citation: Chem. Sci., 2010,1, 411-414
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    Oxygen reduction reactivity of cobalt(II) hangman porphyrins

    R. McGuire Jr., D. K. Dogutan, T. S. Teets, J. Suntivich, Y. Shao-Horn and D. G. Nocera, Chem. Sci., 2010, 1, 411
    DOI: 10.1039/C0SC00281J

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