EFFECT OF ARYL LIGANDS ON THE CHEMICAL HARDNESS OF ARYLMERCURY CATIONS

Citation
Dn. Kravtsov et al., EFFECT OF ARYL LIGANDS ON THE CHEMICAL HARDNESS OF ARYLMERCURY CATIONS, Russian chemical bulletin, 45(5), 1996, pp. 1194-1199
Citations number
36
Categorie Soggetti
Chemistry
Journal title
ISSN journal
10665285
Volume
45
Issue
5
Year of publication
1996
Pages
1194 - 1199
Database
ISI
SICI code
1066-5285(1996)45:5<1194:EOALOT>2.0.ZU;2-P
Abstract
F-19 NMR spectroscopy was used to study the exchange reactions involvi ng 4-fluorothiophenoxides, 4-nitrophenoxides, chlorides, and acetates of arylmercury and triphenylphosphinegold. The analysis of the data on equilibrium constants allows one to obtain information on the compara tive chemical hardness of ArHg+ and Ph(3)PAu(+) cations. The increase in the electron-donating ability of aryl ligands enhances the chemical hardness of ArHg+ cations, their influence being best described by si gma(0) constants of substituted phenyl groups.