Crystal structure and dielectric property of supramolecular macrocyclic[（NDPA）.（18-crown-6）]2＋·（DMA）＋·3ClO4-assemblies

One novel organic-inorganic hybrid supramolecular assemblies ｜（NDPA）（18-crown-6）]2＋（DMA）＋·3ClO4~-（1）,has been successfully constructed through the prominent strategies of crystal engineering（NDPA = N,N-dimethyI-1,4-phenylenediamine,DMA = dimethylamine）,and characterized by IR,powder XRD and single c...

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Bibliographic Details
Published in:中国化学快报：英文版 2015 (1), p.31-35
Main Author: Fang-Fang Wang Cheng Chen Yi Zhang Da-Wei Fu
Format: Article
Language:English
Subjects:
18-冠-6
DMA
介电性能
单晶X射线衍射
晶体结构
装配
超分子组装
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Summary:One novel organic-inorganic hybrid supramolecular assemblies ｜（NDPA）（18-crown-6）]2＋（DMA）＋·3ClO4~-（1）,has been successfully constructed through the prominent strategies of crystal engineering（NDPA = N,N-dimethyI-1,4-phenylenediamine,DMA = dimethylamine）,and characterized by IR,powder XRD and single crystal X-ray diffraction.In the structure,the supramolecular organic cations and inorganic ClO_4~- anions are arranged alternately and linked by N-O…H hydrogen bonds.It is worthy to note that the ClO_4~- are linked to form one-dimensional inorganic chain through strong NH…O hydrogen bonds along b-axis.There is no distinct dielectric anomaly in the temperaturedependent and frequency-dependent dielectric constant curves,suggesting that no phase transition exists within the measured temperature range（120-420 K）.The relative displacement of cations and anions,the turned polarization of molecular electric moment and macrocyclic molecule rotator are the main factors to determine the trend of dielectric constant.
ISSN:1001-8417
1878-5964