CRYSTAL-STRUCTURES OF CHIRAL SMECTOGENIC 4'-OCTYLBIPHENYL-4-YL PARA-[(S)-1-METHYLHEPTYLOXY]BENZOATE AND PARA-OCTYLPHENYL 4'-[(S)-1-METHYLHEPTYLOXY]BIPHENYL-4-CARBOXYLATE

被引：8

作者：

HORI, K ^{[1
]}

OHASHI, Y ^{[1
]}

机构：

[1] TOKYO INST TECHNOL,DEPT CHEM,MEGURO KU,OKAYAMA,TOKYO 152,JAPAN

来源：

JOURNAL OF MATERIALS CHEMISTRY | 1991年 / 1卷 / 04期

关键词：

CRYSTAL STRUCTURE; SMECTIC-C PHASE; LIQUID CRYSTAL; INTERMOLECULAR INTERACTION; X-RAY DIFFRACTION;

D O I：

10.1039/jm9910100667

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：

Single-crystal X-ray analyses have been carried out for 4'-octylbiphenyl-4-yl p-[(S)-1-methylheptyloxy]benzoate (1), which has a phase sequence of cryst.-S(C)*-chol.-iso., and p-octylphenyl 4'-[(S)-1-methylheptyloxy]biphenyl-4-carboxylate (2), which has a phase sequence of cryst.-S(C)*-S(A)-chol.-iso. Each crystal has a smectic-like layer structure, in which the molecular tilt angle is large (65-degrees) in 1, whereas it is small (10-degrees) in 2. These features, which are interpreted to result from the molecular geometry, i.e. the length of the moiety sandwiched by polar groups, are closely related to the structures of the liquid-crystalline phases.

引用

页码：667 / 672

页数：6

共 15 条

[1]

[Anonymous], 1974, INT TABLES XRAY CRYS, VIV

[2] SOME EFFECTS OF SMALL CHANGES IN MOLECULAR FRAMEWORK ON INCIDENCE OF SMECTIC-C AND OTHER SMECTIC LIQUID-CRYSTAL PHASES IN ESTERS [J].