Structure Versatility of Coordination Polymers Constructed from a Semirigid Tetracarboxylate Ligand: Syntheses, Structures, and Photoluminescent Properties

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• 作者：Zu-Jin Lin ; Li-Wei Han ; Dong-Shuang Wu ; Yuan-Biao Huang ; Rong Cao
• 刊名：Crystal Growth & Design
• 出版年：2013
• 出版时间：January 2, 2013
• 年：2013
• 卷：13
• 期：1
• 页码：255-263
• 全文大小：427K
• 年卷期：v.13,no.1(January 2, 2013)
• ISSN：1528-7505

文摘

Based on a semirigid tetracarboxylate ligand 5-(3,5-dicarboxybenzyloxy)isophthalic acid (H₄DBIP), 11 coordination polymers formulated as [M₂DBIP(H₂O)₄(渭₂-H₂O)]路6H₂O [M = Mg (1), Co (2)], [Cd₃(DBIP)₂]路(Me₂NH₂)₂路(H₂O)₃ (3), [Cd₂DBIP(H₂O)₂DMA]路5DMA路5H₂O (4), (InDBIP)路(Me₂NH₂)路3DMA路2H₂O (5), and (LnDBIP)路(Me₂NH₂)路(H₂O)₂ [Ln = Eu (6), Gd (7), Tb (8), Dy (9), Ho (10), and Yb (11)] (Me₂NH₂⁺ = dimethylammonium cation; DMA = N,N-dimethylacetamide) were synthesized under solvothermal conditions and characterized by single-crystal X-ray structural, thermogravimetric, and photoluminescent studies. Compounds 1鈥?b>2 are isomorphous and feature 2-fold interpenetrating dia networks. Compound 3 possesses a rare (4,8)-connected anionic network with flu topology built from 8-connected [Cd₃(COO)₈] clusters and 4-connected DBIP^{4鈥?/sup> ligands. Compound 4 is a 3D framework with pts topology based on 4-connected rectangular DBIP4鈥?/sup> ligands. Compound 5 shows a 3D anionic framework with lon topology. Compounds 6鈥?b>11 display a 6-connected uninodal net with msw topology. In the 11 structures, the ligand H₄DBIP exhibits two different conformations owing to its flexibility, serving as 4-connected or 6-connected nodes in the resultant structures. Luminescent properties have also been investigated.}