Hydrogen Bonding Interactions Directed Various Supramolecular Networks Based on Octamolybdates and Different Flexible Bis-Pyridyl-Bis-Amide Ligands

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• 作者：Junjun Sun ; Hongyan Lin ; Zhihan Chang…
• 关键词：Polyoxometalate ; Bis ; pyridyl ; bis ; amide ; Supramolecular network ; Electrochemical property ; Photocatalytic property
• 刊名：Journal of Inorganic and Organometallic Polymers and Materials
• 出版年：2017
• 出版时间：January 2017
• 年：2017
• 卷：27
• 期：1
• 页码：176-185
• 全文大小：
• 刊物类别：Chemistry and Materials Science
• 刊物主题：Inorganic Chemistry; Organic Chemistry; Polymer Sciences;
• 出版者：Springer US
• ISSN：1574-1451
• 卷排序：27

文摘

Four new inorganic–organic hybrid supramolecular architectures constructed from octamolybdates (Mo₈O₂₆) and different bis-pyridyl-bis-amide ligands, (3-dpye = N,N′-bis(3-pyridinecarboxamide)-1,2-ethane, 4-dpye = N,N′-bis(4-pyridinecarboxamide)-1,2-ethane, 3-dpyp = N,N′-bis(3-pyridinecarboxamide)-1,3-propane, 4-dpyp = N,N′-bis(4-pyridinecarboxamide)-1,3-propane): (3-H₂dpye)(γ-Mo₈O₂₆)_0.5 (1) and (4-H₂dpye)[(4-dpye)(γ-Mo₈O₂₆)]_0.5·2H₂O (2) and [(3-H₂dpyp)₂(β-Mo₈O₂₆)]·2H₂O (3) [(4-H₂dpyp)₂(β-Mo₈O₂₆)]·2H₂O (4), have been hydrothermally prepared and structurally characterized by single crystal X-ray diffraction analyses. Compound 1 exhibits a 3D 6-connected supramolecular framework assembled from 1D γ-Mo₈O₂₆ inorganic chains and 3-H₂dpye molecules. Compound 2 consists of an uncommon 1D γ-Mo₈O₂₆–4-dpye inorganic–organic hybrid chain connected by Mo–N bond, which are extended by 4-H₂dpye molecules to a 3D 3,8-connected supramolecular framework. Compounds 3 and 4 show 3D 6,6-connected supramolecular framework and 2D 3,6-connected supramolecular layer based on β-Mo₈O₂₆ anions and 3/4-H₂dpyp molecules via hydrogen bonds, respectively. The different bis-pyridyl-bis-amide ligands, isomers of octamolybdates and hydrogen bonding interactions in the title compounds show great effects on the final supramolecular networks. The electrochemical, electrocatalytic and photocatalytic activities of compounds 1–4 have been investigated.