NUCLEAR MAGNETIC RESONANCE STUDIES: VIII. DETERMINATION OF THE THERMODYNAMIC PARAMETERS GOVERNING ASSOCIATIONS OF SUBSTITUTED BENZALDEHYDES IN TOLUENE SOLUTION
作者:
R. E. Klinck,
J. B. Stothers,
期刊:
Canadian Journal of Chemistry
(NRC Available online 1966)
卷期:
Volume 44,
issue 1
页码: 37-44
ISSN:0008-4042
年代: 1966
DOI:10.1139/v66-007
出版商: NRC Research Press
数据来源: NRC
摘要:
The temperature dependence of the proton chemical shifts of four substituted benzaldehydes in toluene solution has been measured. From these results, estimates have been made of the enthalpies and entropies of formation of the stereospecific solute–solvent complexes which were previously shown to exist in these systems. These calculations indicate that the ΔHand ΔSvalues are −0.9 ± 0.2 kcal/mole and −4.9 ± 1.3 e.u., respectively. No correlation with substitution is apparent; the results are compared with other available data.
点击下载:
PDF
(347KB)
返 回