STUDY OF THE EFFECT OF TRIARYLPHOSPHINE LIGANDS ON CHEMICAL HARDNESS OF TRIARYLPHOSPHINEGOLD CATIONS

Citation
Dn. Kravtsov et al., STUDY OF THE EFFECT OF TRIARYLPHOSPHINE LIGANDS ON CHEMICAL HARDNESS OF TRIARYLPHOSPHINEGOLD CATIONS, Russian chemical bulletin, 45(10), 1996, pp. 2438-2442
Citations number
28
Categorie Soggetti
Chemistry
Journal title
ISSN journal
10665285
Volume
45
Issue
10
Year of publication
1996
Pages
2438 - 2442
Database
ISI
SICI code
1066-5285(1996)45:10<2438:SOTEOT>2.0.ZU;2-H
Abstract
Exchange reactions with the participation of triarylphosphinegold and phenylmercury 4-fluorothiophenoxides, 4-nitrophenoxides and acetates w ere studied by F-19 NMR spectroscopy. The data on the comparative chem ical hardness of Ar3PAu+ and PhHg(+) cations were obtained based on th e data on the equilibrium constants. The chemical hardness of Ar3PAucations increases as the electron-donating ability of triarylphosphine ligands increases. The effect of these ligands is described by the si gma or sigma(0) constants of substituted phenyl groups and by ionizati on potentials of their electron pairs or the pK(a) values.