Jjm. Ramos et al., MOLECULAR MOTIONS IN A MOLECULAR-CRYSTAL - TETRACHLORO-M-XYLENE, Berichte der Bunsengesellschaft fur Physikalische Chemie, 100(5), 1996, pp. 571-577
Citations number
31
Categorie Soggetti
Chemistry Physical
Journal title
Berichte der Bunsengesellschaft fur Physikalische Chemie
In the present work we report a study of the molecular relaxation proc
esses in tetrachloro-m-xylene in the solid state. The techniques of di
electric relaxation spectroscopy and thermally stimulated discharge cu
rrents were used in order to identify and characterise the different r
elaxation processes and it was found that a solid relator phase appear
s on heating al a temperature of similar to - 125 degrees C. It was al
so observed by thermally stimulated currents that a higher temperature
relaxation occurs above similar to -15 degrees C. The attribution, at
the molecular level, of this relaxation is not straightforward and it
was suggested that it probably corresponds to the onset of the self-d
iffusional motions in the solid.