Cobalt(IV) corroles as catalysts for the electroreduction of O2: reactions of heterobimetallic dyads containing a face-to-face linked Fe(III) or Mn(III) porphyrin

Journal of Inorganic Biochemistry
Karl M KadishRoger Guilard

Abstract

A series of heterobinuclear cofacial porphyrin-corrole dyads containing a Co(IV) corrole linked by one of four different spacers in a face-to-face arrangement with an Fe(III) or Mn(III) porphyrin have been examined as catalysts for the electroreduction of O(2) to H(2)O and/or H(2)O(2) when adsorbed on the surface of a graphite electrode in air-saturated aqueous solutions containing 1M HClO(4). The examined compounds are represented as (PCY)M(III)ClCo(IV)Cl where P is a porphyrin dianion, C is a corrole trianion and Y is a biphenylene (B), 9,9-dimethylxanthene (X), dibenzofuran (O) or anthracene (A) spacer. The catalytic behavior of the seven investigated dyads in the two heterobimetallic (PCY)MClCoCl series of catalysts is compared on one hand to what was previously reported for related dyads with a single Co(III) corrole macrocycle linked to a free-base porphyrin with the same set of linking bridges, (PCY)H(2)Co, and on the other hand to dicobalt porphyrin-corrole dyads of the form (PCY)Co(2) which were shown to efficiently electrocatalyze the four electron reduction of O(2) at a graphite electrode in acid media. Comparisons between the four series of porphyrin-corrole dyads, (PCY)Co(2), (PCY)H(2)Co, (PCY)FeClCoCl and (PCY)MnC...Continue Reading

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Citations

Mar 15, 2016·Chemistry Central Journal·Ahed ZyoudHikmat S Hilal
Dec 24, 2016·Chemical Reviews·Yuanyuan FangKarl M Kadish
Sep 25, 2017·Chemistry : a European Journal·Philipp Lang, Matthias Schwalbe
Jul 21, 2006·Angewandte Chemie·Claude P GrosRoger Guilard
Jan 25, 2007·Chemistry : a European Journal·Gonzalo GivajaJason B Love
Jul 10, 2009·Chemical Communications : Chem Comm·Jason B Love
Mar 27, 2019·Physical Chemistry Chemical Physics : PCCP·Afshan Mohajeri, Nasim Hassani
Jan 21, 2010·Chemical Communications : Chem Comm·Elham AskarizadehJason B Love
Oct 27, 2011·Dalton Transactions : an International Journal of Inorganic Chemistry·Aline M J Devoille, Jason B Love
Sep 13, 2013·Dalton Transactions : an International Journal of Inorganic Chemistry·Anzhela GalstyanBernhard Lippert

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