Journal
JOURNAL OF PHYSICAL ORGANIC CHEMISTRY
Volume 26, Issue 1, Pages 59-63Publisher
WILEY
DOI: 10.1002/poc.3064
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- Deutsche Forschungsgemeinschaft [SFB 749]
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First-order rate constants k1 for the trapping of various donor- and acceptor-substituted benzhydrylium ions in mixtures of 1,1,1,3,3,3-hexafluoro-2-propanol (HFIP) and water ranging from 50 to 99% HFIP (w/w) were determined by laser flash photolytic generation of benzhydrylium ions from benzhydryl triarylphosphonium salts in these solvents. From these rate constants, we derived the solvent-specific reactivity parameters N1 and sN for HFIP/water mixtures as defined by the linear free energy relationship lg k1(20 degrees C)?=?sN(N1?+?E). Copyright (C) 2012 John Wiley & Sons, Ltd.
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