Polyoxometalate-Based Metal鈭扥rganic Frameworks Assembled under the Ionothermal Conditions

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• 作者：Hai Fu ; Yangguang Li ; Ying Lu ; Weilin Chen ; Qiong Wu ; Jingxin Meng ; Xiaolan Wang ; Zhiming Zhang ; Enbo Wang
• 刊名：Crystal Growth & Design
• 出版年：2011
• 出版时间：February 2, 2011
• 年：2011
• 卷：11
• 期：2
• 页码：458-465
• 全文大小：1028K
• 年卷期：v.11,no.2(February 2, 2011)
• ISSN：1528-7505

文摘

One new polyoxometalate compound H₃(Tea)(Bmim)₃[P₂W₁₈O₆₂]路3H₂O (Tea = triethylamine, Bmim = 1-methyl-3-ethylimidazole) (1) and three new polyoxometalate-based metal鈭抩rganic frameworks (PMOFs) Cu^II(Bbi)_1.5(H₂Bbi)₂[P₂W₁₈O₆₂] (Bbi = 1,1-(1,4-butanediyl)-bis(imidazole)) (2), Cu^II_2.5(Mimin)(HMimin)(Bbi)₃[P₂W₁₈O₆₂]路3H₂O (Mimin = methylimidazol) (3), and Cu^II(Bbtz)(H₂Bbi)(H₂Btp)[P₂W₁₈O₆₂] (Bbtz = 1,4-bis(triazol-1-ylmethyl)benzene, Btp = 1,3-Bis(1,2,4-triazol-1-yl)propane) (4) have been synthesized under ionothermal conditions using an ionic liquid (IL) [Bmim]Br (Bmim = 1-ethyl-3-methylimidazole) as solvent. Their structures were determined by single crystal X-ray diffraction. Compound 1 possesses a one-dimensional (1D) supramolecular chain-like structure constructed from [P₂W₁₈O₆₂]^{6鈭?/sup> anions, Bmim, Tea, and water molecules. Compound 2 has a two-dimensional (2D) (6,3)-layer structure built by [P₂W₁₈O₆₂]6鈭?/sup> anions, copper ions, and Bbi ligands. Compounds 3 and 4 are three-dimensional (3D) PMOFs with novel (6.8.10)(4.6.83.10)(4.6.83.12) and classic (65.8)(65.8)-cds topologies, respectively. Compounds 2鈭?b>4 represent the first examples of PMOFs synthesized by the ionothermal method. The successful synthesis of compounds 2鈭?b>4 suggests that ionothermal synthesis will be a very promising synthetic technique for assembling new PMOFs. Additionally, the properties of the four compounds have been studied in detail.}