1,4-Dioxane Hydrate: Dielectric Absorption by a Nondipolar Enclathrated Molecule
作者:
S. R. Gough,
J. A. Ripmeester,
D. W. Davidson,
期刊:
Canadian Journal of Chemistry
(NRC Available online 1975)
卷期:
Volume 53,
issue 15
页码: 2217-2222
ISSN:0008-4042
年代: 1975
DOI:10.1139/v75-311
出版商: NRC Research Press
数据来源: NRC
摘要:
X-Ray, continuous-wave and pulsed n.m.r., and dielectric relaxation studies show the hydrate of 1,4-dioxane (D) to be a normal clathrate hydrate of von Stackelberg's structure II with composition D·∼17H2O. The reorientation rate of the relatively large D molecule is slower and the effective activation energy(l.6 kcal/mol) larger than for other guest molecules previously studied in hydrates of the same structure. Weak dielectric absorption associated with reorientation of nondipolar D molecules is attributed mainly to the induction of a total dipole moment of ∼0.2 D in the 28 water molecules of the large structure II cage by two equal and opposed dipoles in the chair form of D.
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