Thermal stabilities and crystal structures of two supramolecular microporous frameworks based on carboxylate-dipyridyl mix-ligands

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• 作者：L. Y. Xin ; F. Y. Ju ; X. L. Li ; G. Z. Liu
• 关键词：mix ; ligand ; porous coordination polymers ; supramolecular network
• 刊名：Russian Journal of Coordination Chemistry
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：43
• 期：1
• 页码：55-62
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Physical Chemistry; Inorganic Chemistry;
• 出版者：Pleiades Publishing
• ISSN：1608-3318
• 卷排序：43

文摘

The mix-ligand system of 5-(4-carboxy-2-nitrophenoxy)isophthalic acid (HСn-H₂Ipa) and dipyridyl-type molecule produces two M(II) porous coordination polymers, namely {[Zn(HCn-Ipa)(Dpe)(H₂O)] · 2H₂O}_n (I) and {[Co(Cn-HIpa)(Dpe)(H₂O)₃] · 2.5H₂O}_n (II) (Dpe = 1,2-di(4-pyridyl) ethylene). Structure determinations reveal that two complexes feature different one-dimensional (1D) polymers assembling into supramolecular microporous frameworks with different thermal stabilities. The 3D supramolecular frameworks of complex I show relatively lower stability, which can be caused by relatively larger porous cavity absent of the strong hydrogen bonds interaction, whereas thick-layer blocks in complex II are cohered further together by H-bonding interactions to form its 3D supramolecular network with relatively higher stability, indicating extraordinarily stable H-bonding systems; CIF files CCDC nos. 966919 (I) and 966920 (II).