Proton dynamics in NH+•••N hydrogen bond in the paraelectric structure of 1,4-diazabicyclo[2.2.2]octane perchlorate

被引：33

作者：

Katrusiak, A ^{[1
]}

机构：

[1] Adam Mickiewicz Univ, Fac Chem, PL-60780 Poznan, Poland

来源：

JOURNAL OF MOLECULAR STRUCTURE | 2000年 / 552卷

关键词：

hydrogen bond; disorder; X-ray diffraction; ferroelectric; phase transition;

D O I：

10.1016/S0022-2860(00)00475-0

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：

1,4-diazabicyclo[2.2.2]octane (dabco) perchlorate, [C6H13N2](+). ClO4-, and tetrafluoroborate, [C6H13N2](+). BF4-, form orthorhombic ferroelectric crystals with NH+... N hydrogen bonds linking the cations into linear chains. Above T-c the protons become disordered in the hydrogen bonds. The temperature dependence of the unit-cell parameters and the paraelectric structure of the dabcoHClO(4) crystals is reported. The coupling between the structural features and the H+-dynamics is discussed. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：159 / 164

页数：6

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