TY - JOUR
T1 - Quantitative NMR spectrometry of phase-transfer catalysts. Part 1. Determination of Extraction Constants and Water of Hydration
AU - Bar, Raphael
AU - Karpuj-Bar, Liliana
AU - Sasson, Yoel
AU - Blum, Jochanan
PY - 1983
Y1 - 1983
N2 - Proton magneticf resonance spectrometry was applied for evaluation of the distribution ratios and apparent extraction constants of tetraalkylammonium and tetraalkylphosphonium salts in two liquid-phase systems. Triethylbenzyl- and tetrabutylammonium chloride in dichloromethane and chlorobenzene, respectively, were shown to be salted out in the presence of aqueous sodium hydroxide solutions. 1H-n.m.r. spectrometry was also used to determine the degree of hydration of quaternary onium salts in two-phase systems. The results were compatible with those obtained by the Karl Fischer method.
AB - Proton magneticf resonance spectrometry was applied for evaluation of the distribution ratios and apparent extraction constants of tetraalkylammonium and tetraalkylphosphonium salts in two liquid-phase systems. Triethylbenzyl- and tetrabutylammonium chloride in dichloromethane and chlorobenzene, respectively, were shown to be salted out in the presence of aqueous sodium hydroxide solutions. 1H-n.m.r. spectrometry was also used to determine the degree of hydration of quaternary onium salts in two-phase systems. The results were compatible with those obtained by the Karl Fischer method.
UR - http://www.scopus.com/inward/record.url?scp=0013192162&partnerID=8YFLogxK
U2 - 10.1016/0003-2670(83)80020-8
DO - 10.1016/0003-2670(83)80020-8
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AN - SCOPUS:0013192162
SN - 0003-2670
VL - 154
SP - 203
EP - 209
JO - Analytica Chimica Acta
JF - Analytica Chimica Acta
IS - C
ER -