Dinuclear cobalt-1,10-phenanthroline (1) and 2,2′-bipyridine (2) complexes bridged by 1,8-bis(2,2′:6′,2′′-terpyrid-4′-yl)anthracene (btpyan) were prepared. Both of the complexes selectively catalysed the electrochemical four-electron reduction of dioxygen to H2O without the generation of H2O2 as a two-electron reduction product.
Chemical Communications
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