Journal article
REINVESTIGATION OF THE THIOUREA CYCLOHEXANE INCLUSION COMPOUND BY DEUTERIUM NMR-SPECTROSCOPY
Journal of Physical Chemistry, Vol.95(1), pp.407-413
Jan/1991
Abstract
Deuterium NMR measurements are reported on the thiourea-cyclohexane inclusion compound prepared from perdeuterated cyclohexane over the temperature range -180 to +60-degrees-C. Three regions are identified according to the structure of the host thiourea sublattice is monoclinic and the guest molecules. In the low-temperature region ( -117-degrees-C, phase I) the host lattice remains hexagonal, while the guest molecules are orientationally high disordered, although the occupy the well-defined crystallographic 32 sites of the lattice channels. Line-shape analysis of cyclohexane-d12 in this phase indicates that the guest molecules undergo fast ring inversion with kinetic equation, k (s-1) = 1.06 X 10(13) exp(-11.1/RT). The results are compared with similar results for the urea-trioxane inclusion compound, and open questions regarding the nature of the guest sublattice in these compounds are discussed.
Details
- Title
- REINVESTIGATION OF THE THIOUREA CYCLOHEXANE INCLUSION COMPOUND BY DEUTERIUM NMR-SPECTROSCOPY
- Creators
- R POUPKO (null)E FURMAN (null)K MULLER (null)Zeev Luz (null) - The Weizmann Institute of Science
- Resource Type
- Journal article
- Publication Details
- Journal of Physical Chemistry, Vol.95(1), pp.407-413; Jan/1991
- Number of pages
- 7
- Language
- English
- DOI
- https://doi.org/10.1021/j100154a071
- Scientific Unit
- The Weizmann Institute of Science
- Record Identifier
- 993266565503596
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