CALORIMETRIC AND DIELECTRIC STUDIES OF PHASE TRANSITION IN TlNO2 CRYSTAL
- 5 December 1977
- journal article
- Published by Oxford University Press (OUP) in Chemistry Letters
- Vol. 6 (12) , 1427-1430
- https://doi.org/10.1246/cl.1977.1427
Abstract
The molar heat capacity of TlNO2 crystal has been measured between 14 and 355 K with an adiabatic calorimeter. A heat capacity anomaly due to a phase transition was found at (282.4±0.5) K. The enthalpy and entropy changes of the transition are 6400 Jmol−1 and 23.6 J K−1mol−1, respectively. The complex dielectric permittivity was measured in the frequency range between 200 Hz and 100 kHz. Dielectric dispersion and relaxation were found between 80 and 180 K. The activation enthalpy derived from the dielectric measurement is 19 kJ mol−1 and is possibly related to the reorientation of the NO2− ion.Keywords
This publication has 9 references indexed in Scilit:
- Calorimetric Study of the Glassy State. XIII. Thermodynamic Properties of Normal and Deuterated Orthoboric Acid CrystalsBulletin of the Chemical Society of Japan, 1977
- Calorimetric and dielectric studies of a phase transition in thallium dihydrogen phosphate: A nearly critical caseSolid State Communications, 1977
- Heat capacities of copper(II) formate tetrahydrate and tetradeuterateJournal of Physics and Chemistry of Solids, 1976
- Phase Transitions in the Quinol Clathrate Compounds. I. The Quinol Hydrogen Cyanide Clathrate CompoundJournal of the Physics Society Japan, 1971
- Calorimetric Study of the Glassy State. VI. Phase Changes in Crystalline and Glassy-Crystalline 2,3-DimethylbutaneBulletin of the Chemical Society of Japan, 1971
- An Automatic Adiabatic Calorimeter for Low Temperatures. The Heat Capacity of Standard Benzoic AcidBulletin of the Chemical Society of Japan, 1965
- Thermal Data. XVII. The Heat Capacity, Entropy, and Free Energy of Formation of Cyclohexane. A New Method of Heat Transfer in Low Temperature CalorimetryJournal of the American Chemical Society, 1943
- The Heat Capacity and Entropy, Heats of Transition, Fusion and Vaporization and the Vapor Pressures of Cyclohexane. The Vibrational Frequencies of Alicyclic Ring Systems1Journal of the American Chemical Society, 1943
- CCXXV.—The nitrites of thallium, lithium, caesium, and rubidiumJournal of the Chemical Society, Transactions, 1913