Journal ArticleDOI
Strongly basic systems: iii. the h− function for various solvent systems
Ross Stewart,J. P. O'Donnell +1 more
TLDR
The Hammett acidity function concept has been used to determine simultaneously the pKa values of 24 substituted anilines and diphenylamines and the H− values of various solvent systems as discussed by the authors.Abstract:
The Hammett acidity function concept has been used to determine simultaneously the pKa values of 24 substituted anilines and diphenylamines and the H− values of various solvent systems. The following solvent systems were examined (the most basic H− value obtained for each is shown in parentheses): water containing benzyltrimethylammonium hydroxide (16.20); pyridine–water containing tetramethylammonium hydroxide (18.91); sulpholane–water containing tetramethylammonium hydroxide (19.18); dimethyl sulphoxide–water containing tetramethylammonium hydroxide (18.61); water containing lithium hydroxide (14.31).In addition to these results adjustments have been made to previously published scales for hydrazine–water (15.08) and ethylenediamine–water (15.48).read more
Citations
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Journal ArticleDOI
Molecular mechanisms for the hypoxiadependent activation of 3-amino-1,2,4-benzotriazine-1, 4-dioxide (SR 4233)
TL;DR: Evidence was found that the one-electron reduction product of the parent compound is an oxidizing radical that caused single- and double-strand breaks in plasmid DNA and that produced a malondialdehyde-like thiobarbituric acid adduct from 2-deoxy-D-ribose.
Journal ArticleDOI
The chemical and physical properties of DMSO.
TL;DR: The conclusions of some of the recent investigations which have extended the knowledge of DMSO chemistry and the reasons for the particular effects it shows as a reaction solvent are reviewed.
Journal ArticleDOI
Base-strength distribution studies of solid-base surfaces
TL;DR: In this article, the titration of solids suspended in cyclohexane with benzoic acid, using a series of H − indicators, has been used to determine the base strength distribution of solid surfaces.
Book ChapterDOI
Physical Organic Chemistry of Reactions in Dimethyl Sulphoxide
E. Buncel,H. Wilson +1 more
TL;DR: In this paper, the use of dimethyl sulphoxide (DMSO) as an "inert" solvent in mechanistic investigations of heterolytic reactions and illustrates the methods developed for mechanistic study in dipolar aprotic media.
Journal ArticleDOI
Strongly basic systems. VIII. The H− function for dimethyl sulfoxide – water – tetramethylammonium hydroxide
Douglas Dolman,Ross Stewart +1 more
TL;DR: In this article, an H− acidity function based on the ionization of 24 substituted anilines and diphenylamines was established in the system dimethyl sulfoxide -water - tetramethylammonium hydroxide.
References
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Journal ArticleDOI
The Proton in Chemistry
R. P. Bell,Simon H. Bauer +1 more
TL;DR: The first edition of this book was based on the lectures which I gave at Cornell University during 1958 as George Fisher Baker Lecturer, and I would like to repeat my warmest thanks to Professor F. A. Long and the other members of the Department of Chemistry for their kindness and helpful advice as discussed by the authors.