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Dioxygen evolving complex

The possibility of the practical application of the catalytic photode-composition of water based on the reactivity of the excited states of tris(2,2 -bipyridine) complexes of ruthenium(III) and ruthenium(II) has attracted considerable interest, but it is now clear that the efficiency of this process is limited not only by the lack of efficient catalysts, particularly for the dioxygen-evolving path, but also by both thermal and photochemical ligand oxidation 1,2) and ligand substitution reactions (3) of the 2,2 -bipyridine complexes. The stoichiometrically analogous tris(2,2 -bipyridine) and tris(l,10-phenanthroline) complexes of both... [Pg.381]

Abu-Omar MM (2011) High-valent iron and manganese complexes of corrole and porphyrin in atom transfer and dioxygen evolving catalysis. Dalton Trans 40 3435-3444... [Pg.83]

Oxygen evolving complex Water to dioxygen conversion (37)... [Pg.35]

Very recently a new kind of electrocatalyst has been propounded using the dinuclear quinone-containing complex of ruthenium (25).492,493 Controlled-potential electrolysis of the complex at 1.70 V vs. Ag AgCl in H20 + CF3CH2OH evolves dioxygen with a current efficiency of 91% (21 turnovers). The turnover number of 02 evolution increases up to 33,500 when the electrolysis is carried out in water (pH 4.0) with an indium-tin oxide(ITO) electrode to which the complex is bound. It has been suggested that the four-electron oxidation of water is achieved by redox reactions of not only the two Run/Ruin couples, but also the two semiquinone/quinone couples of the molecule. [Pg.498]

As for the catalyst we have found that the trinuclear Ru-ammine complex called Ru-red (3) is an active catalyst, and it evolved dioxygen bubbles in the... [Pg.163]

Many variations of dinuclear i-phenoxo-bis( j.-carbox Tato)dimanga-nese(II) complexes of L5 [lOOe] show catalase-like activity (more than 1000 catalytic turnovers based on the measurement of evolved dioxygen) via the mechanism shown in Scheme 4 (R1 = R2 = CH3 = 29). [Pg.381]

VII.D. Tetranuclear Mn Complexes and Other Mn Complexes That Evolve Dioxygen from H202... [Pg.401]

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See also in sourсe #XX -- [ Pg.34 ]



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Dioxygen complexes

Evolvability

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