A N.Q.R. study of phase transitions in the p-dihalobenzenes
β Scribed by A.D. McDonald; S. Hacobian
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 366 KB
- Volume
- 111
- Category
- Article
- ISSN
- 0022-2860
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π SIMILAR VOLUMES
The UV absorption spectrum of a TP smgle crystal IS measured between 297 and 77 K. The UV spectrum shifts to hyhcr encgy as the temperature falls. The temperature dependence of the UV absorption spectrum mdrcates that a disphcwe transltlon occurs rather than an order-disorder one III a TP crystal.
Results of calorimetric studies of C,,, fullerene are reported. A phase transition at 195 K was found in pristine CT0 samples crystallized from toluene-containiag solutions, the material being identified as a 1: 1 C,,,-toluene adduct. Heating pristine samples over 430 K results in an irreversible de