Oxidation-reduction reaction of photoinduced benzyl radicals in water: para substituent effect

Ahmed M. Mayouff; Helge Lemmetyinen

doi:10.1016/1010-6030(93)90006-7

Oxidation-reduction reaction of photoinduced benzyl radicals in water: para substituent effect

Ahmed M. Mayouff, Helge Lemmetyinen

Research output: Journal Publication › Article › peer-review

6 Citations (Scopus)

Abstract

The formation rate constant k₁, the dissociation rate constant k₂ and the redox reaction rate constant k_H₂O of [X-C₆H₄-CH₂-Cu²⁺] intermediates (XCH₃O, CH₃, H, Cl) have been determined at room temperature in an aqueous solution of [(NH₃)₅(XC₆H₄CH₂- COO^-)(Co³⁺)](ClO₄)₂ and Cu(ClO₄)₂ by time-resolved laser flash photolysis. The rate constant k₁ correlates well with the Hammett substituent parameter σ_p. The reaction constant ρ{variant} was -(1.415±0.111), indicating a high resonance effect.

Original language	English
Pages (from-to)	205-211
Number of pages	7
Journal	Journal of Photochemistry and Photobiology A: Chemistry
Volume	73
Issue number	3
DOIs	https://doi.org/10.1016/1010-6030(93)90006-7
Publication status	Published - 1 Aug 1993
Externally published	Yes

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
General Physics and Astronomy

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title = "Oxidation-reduction reaction of photoinduced benzyl radicals in water: para substituent effect",

abstract = "The formation rate constant k1, the dissociation rate constant k2 and the redox reaction rate constant kH2O of [X-C6H4-CH2-Cu2+] intermediates (XCH3O, CH3, H, Cl) have been determined at room temperature in an aqueous solution of [(NH3)5(XC6H4CH2- COO-)(Co3+)](ClO4)2 and Cu(ClO4)2 by time-resolved laser flash photolysis. The rate constant k1 correlates well with the Hammett substituent parameter σp. The reaction constant ρ{variant} was -(1.415±0.111), indicating a high resonance effect.",

author = "Mayouff, {Ahmed M.} and Helge Lemmetyinen",

year = "1993",

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doi = "10.1016/1010-6030(93)90006-7",

language = "English",

volume = "73",

pages = "205--211",

journal = "Journal of Photochemistry and Photobiology A: Chemistry",

issn = "1010-6030",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Oxidation-reduction reaction of photoinduced benzyl radicals in water

T2 - para substituent effect

AU - Mayouff, Ahmed M.

AU - Lemmetyinen, Helge

PY - 1993/8/1

Y1 - 1993/8/1

N2 - The formation rate constant k1, the dissociation rate constant k2 and the redox reaction rate constant kH2O of [X-C6H4-CH2-Cu2+] intermediates (XCH3O, CH3, H, Cl) have been determined at room temperature in an aqueous solution of [(NH3)5(XC6H4CH2- COO-)(Co3+)](ClO4)2 and Cu(ClO4)2 by time-resolved laser flash photolysis. The rate constant k1 correlates well with the Hammett substituent parameter σp. The reaction constant ρ{variant} was -(1.415±0.111), indicating a high resonance effect.

AB - The formation rate constant k1, the dissociation rate constant k2 and the redox reaction rate constant kH2O of [X-C6H4-CH2-Cu2+] intermediates (XCH3O, CH3, H, Cl) have been determined at room temperature in an aqueous solution of [(NH3)5(XC6H4CH2- COO-)(Co3+)](ClO4)2 and Cu(ClO4)2 by time-resolved laser flash photolysis. The rate constant k1 correlates well with the Hammett substituent parameter σp. The reaction constant ρ{variant} was -(1.415±0.111), indicating a high resonance effect.

UR - http://www.scopus.com/inward/record.url?scp=0000939622&partnerID=8YFLogxK

U2 - 10.1016/1010-6030(93)90006-7

DO - 10.1016/1010-6030(93)90006-7

M3 - Article

AN - SCOPUS:0000939622

SN - 1010-6030

VL - 73

SP - 205

EP - 211

JO - Journal of Photochemistry and Photobiology A: Chemistry

JF - Journal of Photochemistry and Photobiology A: Chemistry

IS - 3

ER -

Oxidation-reduction reaction of photoinduced benzyl radicals in water: para substituent effect

Abstract

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