Intermolecular-medium and intramolecular-weak hydrogen bonding chains in the crystals of chiral trifluoromethylated amino alcohols

被引：16

作者：

Katagiri, T ^{[1
]}

Fujiwara, Y ^{[1
]}

Takahashi, S ^{[1
]}

Uneyama, K ^{[1
]}

机构：

[1] Okayama Univ, Fac Engn, Dept Appl Chem, Okayama 7008530, Japan

来源：

JOURNAL OF FLUORINE CHEMISTRY | 2005年 / 126卷 / 08期

基金：

日本科学技术振兴机构;

关键词：

hydrogen bond; weak hydrogen bond; medium hydrogen bond; hydrogen bonding chain; trifluoromethylated amino alcohols; chiral recognition; structure of hydrogen bond;

D O I：

10.1016/j.jfluchem.2005.04.014

中图分类号：

O61 [无机化学];

学科分类号：

070301 [无机化学]; 081704 [应用化学];

摘要：

A structural feature of hydrogen bonding chains found in the crystals of trifluoromethylated amino alcohols is reported. Hydrogen bondings of 3-(N,N-dialkylamino)-1,1,1-trifluoro-2-propanols construct chiral spiral hydrogen bonding chains. Lone pairs on the nitrogen atoms of the amino alcohols participate in two hydrogen bondings. Detailed structural analysis of the hydrogen bonds of the 3-(N,N-dimethylamino)-1,1,1-trifluoro-2-propanol suggested that the chain built up with alternating intermolecular-medium and intramolecular-weak hydrogen bonds. The medium intermolecular hydrogen bond, which transfers a proton from the hydroxy group to the amino nitrogen, would make a tentative zwitterionic form of the molecule. Then, electrostatic attraction between the charges in the zwitterion centers induced a weak intramolecular hydrogen bond. (c) 2005 Elsevier B.V. All rights reserved.

引用

页码：1134 / 1139

页数：6

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