具有液晶相的二元体系中的氢键和eda相互作用

Alfred Kolbe, Gerhard Pelzl, Wolfgang Weissflog
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引用次数: 2

摘要

用红外光谱法研究了由4,4 '二酰基二苯基(I)和N,N '二烷基-4,4 '二氨基二苯基(II)组成的具有液晶相的EDA配合物。配合物的黄色表示EDA相互作用。氢键作用于芳环平面上,显著增强了电子堆栈相互作用。通过与(I)和N,N '二甲基化化合物II形成的体系进行比较,证明了这一点。后一种化合物虽然与II密切相关,但缺乏质子供体能力。进一步的D/H同位素交换被用来研究这个问题。
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Hydrogen bonding and EDA-interaction in binary systems with liquid crystalline phases

An EDA complex, formed by 4,4′diacyldiphenyl (I) and N,N′dialkyl-4,4′diaminodiphenyl (II), which possesses liquid crystalline phases, has been investigated by ir spectroscopy. The EDA interaction is indicated by the yellow colour of the complex. The electronic stack interaction is remarkably enhanced by hydrogen bonds, which act in the plane of the aromatic rings. This has been demonstrated by comparison with a system formed by (I) and the N,N′dimethylated compound II. Although the latter compound is strongly related to II, it lacks proton donor ability. Further D/H isotope exchange has been used to investigate the problem.

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