Bimolecular homolytic substitution (S(H)2) reactions with hydrogen atoms. time-resolved electron spin resonance detection in the pulse radiolysis of alpha-(methylthio)acetamide

Bimolecular homolytic substitution (S(H)2) reactions with hydrogen atoms. time-resolved electron spin resonance detection in the pulse radiolysis of alpha-(methylthio)acetamide

Pulse radiolysis of aqueous solutions of alpha-(methylthio)acetamide produced unexpectedly large quantities of acetamide radicals that were identified by time-resolved electron spin resonance (TRESR) spectroscopy. The pH dependence of the TRESR-measured radical yields, results from selective scaveng...

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Veröffentlicht in:Journal of the American Chemical Society 2004-11, Vol.126 (44), p.14468-14474
Hauptverfasser: Wisniowski, Pawel, Bobrowski, Krzysztof, Carmichael, Ian, Hug, Gordon L
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container_end_page 14474
container_issue 44
container_start_page 14468
container_title Journal of the American Chemical Society
container_volume 126
creator Wisniowski, Pawel
Bobrowski, Krzysztof
Carmichael, Ian
Hug, Gordon L
description Pulse radiolysis of aqueous solutions of alpha-(methylthio)acetamide produced unexpectedly large quantities of acetamide radicals that were identified by time-resolved electron spin resonance (TRESR) spectroscopy. The pH dependence of the TRESR-measured radical yields, results from selective scavenging reactions, and density functional theory predictions of the reaction thermochemistry prove that bimolecular homolytic substitution, S(H)2, of the acetamide radical fragment by a H atom is the most likely formation pathway.
doi_str_mv 10.1021/ja0458625
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title Bimolecular homolytic substitution (S(H)2) reactions with hydrogen atoms. time-resolved electron spin resonance detection in the pulse radiolysis of alpha-(methylthio)acetamide
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