Energetics of proton-coupled electron transfer in high-valent Mn2(μ-O)2 systems: Models for water oxidation by the oxygen-evolving complex of photosystem II

Journal of the American Chemical Society

Volumn 118, Issue 45, 1996, Pages 11325-11326

  Baldwin, Michael J ^a   Pecoraro, Vincent L ^a  

^a UNIVERSITY OF MICHIGAN   (United States)

Author keywords

[No Author keywords available]

Indexed keywords

ARTICLE; PHOTOSYSTEM II; THERMODYNAMICS;

EID: 0029909232     PISSN: 00027863     EISSN: None     Source Type: Journal    
DOI: 10.1021/ja9626906     Document Type: Article

References (31)

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20. a = 27).
21. IV couples within 30 mV for the two solvents.
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29. The calculation of D(O-H) follows that used by Mayer, 28 except that the energy for the oxidation of the Mn complex must be referenced to the reduction potential of Hi in acetonitrile (0.09V vs SCE under our experimantal conditions) rather than in water (NHE). This corresponds to an 8 kcal/mol difference. While D(O-H) is essentially solvent independent, the AG determined for eq 1 is solvent-specific and includes solvation energy differences between products and reactants.
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31. 12