DETECTION OF THE PLASTIC-CRYSTALLINE TRANSITION OF TRIOXANE BY POSITRON-ANNIHILATION LIFETIME SPECTROSCOPY

Authors
RODRIGUEZ C MORALES C LOPEZCASTANARES R SANCHEZ V
Citation
C. Rodriguez et al., DETECTION OF THE PLASTIC-CRYSTALLINE TRANSITION OF TRIOXANE BY POSITRON-ANNIHILATION LIFETIME SPECTROSCOPY, Journal of the Chemical Society. Faraday transactions, 91(18), 1995, pp. 3185-3187
Citations number
27
Categorie Soggetti
Chemistry Physical","Physics, Atomic, Molecular & Chemical
Journal title
Journal of the Chemical Society. Faraday transactions → ACNP
ISSN journal
09565000
Volume
91
Issue
18
Year of publication
1995
Pages
3185 - 3187
Database
ISI
SICI code
0956-5000(1995)91:18<3185:DOTPTO>2.0.ZU;2-8
Abstract
The plastic-crystalline transition and the melting temperature of trio xane have been detected at ca. 50 and 64 degrees C, respectively, by p ositron annihilation lifetime spectroscopy. Changes in the ortho-posit ronium parameters, tau(3) and I-3, are correlated with the fluctuation s occurring in the mean size and density, respectively, of the free vo lume of trioxane during the solid-solid transition. targe variations i n the mean free volume were detected at the plastic-crystalline transi tion.