X-RAY STUDY ON STRUCTURAL PHASE-TRANSITIONS OF 4,4''-DIFLUORO-P-TERPHENYL AND 4,4'''-DIFLUORO-P-QUATERPHENYL

被引：12

作者：

SAITOH, H

SAITO, K

YAMAMURA, Y

MATSUYAMA, H

KIKUCHI, K

IKEMOTO, I

机构：

[1] Department of Chemistry, Faculty of Science, Tokyo Metropolitan University, Hachioji, Tokyo

来源：

SOLID STATE COMMUNICATIONS | 1994年 / 91卷 / 02期

关键词：

D O I：

10.1016/0038-1098(94)90259-3

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Low-temperature X-ray diffraction experiments were performed on 4,4''-difluoro-p-terphenyl (DFTP) and 4,4'''-difluoro-p-quaterphenyl (DFQP). The structure analyses were performed for the high-temperature phases and the librational motion of the benzene rings was analyzed. The super-lattice reflections were found in DFQP below about 200 K on the same positions as the low-temperature phase of p-quaterphenyl. In DFTP, the satellite reflections with small wavevector component delta(c) (about 1/6) along the c*-axis were found below the transition temperature.

引用

页码：89 / 92

页数：4

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