Electron transfer reactions of singlet molecular oxygen with phenols | Zendy

Mártire Daniel O. | Zendy; Gonzalez Mónica C. | Zendy

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Electron transfer reactions of singlet molecular oxygen with phenols

Author(s) -

Mártire Daniel O.,

Gonzalez Mónica C.

Publication year - 2000

Publication title -

journal of physical organic chemistry

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.325

H-Index - 66

eISSN - 1099-1395

pISSN - 0894-3230

DOI - 10.1002/(sici)1099-1395(200004)13:4<208::aid-poc231>3.0.co;2-s

Subject(s) - chemistry , diabatic , singlet oxygen , quenching (fluorescence) , singlet state , photochemistry , reaction rate constant , electron transfer , oxygen , ion , computational chemistry , excited state , atomic physics , kinetics , fluorescence , organic chemistry , thermodynamics , adiabatic process , physics , quantum mechanics

The correlation of the reactive component of the bimolecular quenching rate constant, k r , with Δ G for reactions of singlet molecular oxygen with phenols is interpreted in terms of classical and semiclassical theories of electron transfer. Both treatments indicate a diabatic process with a reorganization energy of about 0.46 eV. The observed diabaticity is in line with a crossing of states with different symmetry. Similar results were obtained for the reactions of singlet molecular oxygen with phenoxide ions in water. Copyright © 2000 John Wiley & Sons, Ltd.

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