Preliminary X-ray study of the ordering phase transitions in the inclusion compound TANO-hexadecane
- 1 January 1990
- journal article
- Published by EDP Sciences in Journal de Physique
- Vol. 51 (11) , 1213-1228
- https://doi.org/10.1051/jphys:0199000510110121300
Abstract
The nitroxide radical: (tetramethyl-2,2,6,6 oxo-4 piperidyl-1) oxyle- or TANO (C9H16NO2) can form numerous channel inclusion compounds with linear molecules including alkanes. At room temperature both alkanes and TANO molecules exhibit important disorders. We present a preliminary X-ray study of the evolution of these disorders as a function of temperature for the inclusion compound TANO-hexadecane (24 C9H 16NO2, 1 C16H34). It has two complex ordering phase transitions at 171 K and 137 K ; the lower temperature phase has a superperiod of about 100 Å. A comparison with the well-studied TANO-heptane compound is madeKeywords
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