X-Ray Diffraction and Thermographic Study of Mesomorphic 4-Acylphenyl 4'-Nonyloxybenzoate CH3C(O)C6H4-OC(O)-C6H4-OC9H19

被引：3

作者：

Kuz'mina, L. G. ^{[1
]}

Konstantinov, I. I. ^{[2
]}

Kalle, P. ^{[1
]}

Navasardyan, M. A. ^{[1
]}

机构：

[1] Russian Acad Sci, Kurnakov Inst Gen & Inorgan Chem, Moscow 119991, Russia

[2] Russian Acad Sci, Topchiev Inst Petrochem Synth, Moscow 119991, Russia

来源：

CRYSTALLOGRAPHY REPORTS | 2020年 / 65卷 / 03期

基金：

俄罗斯科学基金会;

关键词：

CRYSTAL-STRUCTURES;

D O I：

10.1134/S1063774520030190

中图分类号：

O7 [晶体学];

学科分类号：

0702 ; 070205 ; 0703 ; 080501 ;

摘要：

The structure and thermal properties of mesomorphic phenyl benzoate CH3-C(O)-C6H4-OC(O)-C6H4-OC9H19 (I) were studied by differential scanning calorimetry (DSC) and X-ray diffraction. The crystal packing of I is typical of mesomorphic crystals. It consists of alternating loosely packed aliphatic and closely packed aromatic regions, the latter regions being stabilized by weak directional C-H center dot center dot center dot pi interactions. According to the DSC data, compound I does not form a mesophase upon melting. The latter was observed only upon cooling of the isotropic melt. The lack of enantiotropic mesomorphism in the crystal of I is attributed to the fact that C-H center dot center dot center dot pi non-covalent interactions, which could ensure the structuring of the melt, are broken at the melting point.

引用

页码：444 / 448

页数：5

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