Solvent nucleophilicities of hexafluoroisopropanol/water mixtures

Autor:	Johannes Ammer, Herbert Mayr
Rok vydání:	2012
Předmět:	Solvent Reaction rate constant Chemistry Organic Chemistry Inorganic chemistry Organic chemistry Reactivity (chemistry) Trapping Physical and Theoretical Chemistry Free-energy relationship Ion
Zdroj:	Journal of Physical Organic Chemistry. 26:59-63
ISSN:	0894-3230
DOI:	10.1002/poc.3064
Popis:	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 °C) = sN(N1 + E). Copyright © 2012 John Wiley & Sons, Ltd.
Databáze:	OpenAIRE
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