The thermally induced phase transition in 2,3,7,8-tetramethoxythianthrene

被引：2
|
作者：
Sanchis, MJ
Marthe, S
Calleja, RD
Martinez, ES
Epple, M
Klar, G
机构：
[1] Univ Politecn Valencia, ETSII, Dept Termodinam Aplicada, E-46071 Valencia, Spain
[2] Univ Hamburg, Inst Inorgan & Appl Chem, D-20146 Hamburg, Germany
来源：
BERICHTE DER BUNSEN-GESELLSCHAFT-PHYSICAL CHEMISTRY CHEMICAL PHYSICS | 1997年 / 101卷 / 12期
关键词：
crystal structure; electrical properties; materials properties; phase transitions; X-ray scattering;
D O I：
10.1002/bbpc.19971011214
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
2,3,7,8-Tetramethoxythianthrene is known to crystallize in orthorhombic and monoclinic polymorphs, depending on the solvent used for crystallization. Upon heating the orthorhombic form to ca. 150 degrees C, an enantiotropic (reversible) phase transition into the monoclinic phase occurs. This phase transition has been characterized by different techniques: differential scanning calorimetry (DSC), temperature-resolved X-ray powder diffractometry (TXRD), and thermally stimulated depolarization current measurements (TSDC). A mechanism for this solid-state transition is proposed based on single-crystal X-ray structures.
引用
收藏
页码：1889 / 1895
页数：7
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