Accession Number:
AD0678978
Title:
INFLUENCE DES EFFETS INDUCTIFS ET STERIQUES SUR LA BASICITE DES AMINES TERTIAIRES. DETERMINATION ET INTERPRETATION DES DELTA H ET DES DELTA S (INFLUENCE OF THE INDUCTIVE AND STERIC EFFECTS ON THE BASICITY OF TERTIARY AMINES. DETERMINATION AND INTERPRETATION OF DELTA H AND THE DELTA S.),
Descriptive Note:
Corporate Author:
CANADIAN ARMAMENT RESEARCH AND DEVELOPMENT ESTABLISHMENT QUEBEC
Personal Author(s):
Report Date:
1967-12-26
Pagination or Media Count:
6.0
Abstract:
Delta H and delta S were obtained by pKa measurements in water at different temperatures for a series of dihydroxylated tertiary amines. The thermodynamic factors seem to confirm that the diminution in basicity introduced by long chain substituents is caused by frontal hindrance to solvation, accompanied by a new type of back-strain. With short chain substituents, the formation of intramolecular hydrogen bonds can be seen by the variations of the entropy factor. Author
Descriptors:
Subject Categories:
- Atomic and Molecular Physics and Spectroscopy