DSC STUDY OF 2-BROMOTHIOPHENE - A COMPOUND WITH 3 MELTING-POINTS

被引：9

作者：

GONTHIERVASSAL, A

SZWARC, H

ROMAIN, F

机构：

[1] UNIV PARIS 11,CHIM PHYS MAT AMORPHES LAB,CNRS,URA D 1104,BATIMENT 490,F-91405 ORSAY,FRANCE

[2] LAB SPECTROSCOPIE INFRAROUGE & RAMAN,CNRS,UPR 2631,F-94320 THIAIS,FRANCE

来源：

THERMOCHIMICA ACTA | 1992年 / 202卷

关键词：

D O I：

10.1016/0040-6031(92)85154-N

中图分类号：

O414.1 [热力学];

学科分类号：

摘要：

By means of a DSC study, 2-bromothiophene was shown to possess three different phases which melt at atmospheric pressure. These phases, the existence of which was subsequently checked by Raman spectroscopy, were obtained reproducibly through simple thermal treatments, and melt at 196.2 K, 200.3 K and 203.9 K respectively. Their relative stabilities were established, and a nomenclature is proposed. A high pressure-temperature phase diagram pattern is suggested. Finally, premelting phenomena seem to depend on the observed phases.

引用

页码：87 / 96

页数：10

共 11 条

[1] CRYSTALLINE THIOPHENE .2. A COMPREHENSIVE STUDY OF STABLE AND METASTABLE PHASES BY MEANS OF HEAT-CAPACITY, THERMALLY STIMULATED CURRENTS AND RAMAN-SPECTROSCOPY MEASUREMENTS [J].