Supramolecular compounds constructed by main group metals, polyoxotungstates and polyaminepolycarboxylate

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• 作者：Chun-Hua Zhang^a ; ^b ; ^{zhangch542@nenu.edu.cn} ; Ya-Guang Chen^a ; ^{chenyg146@nenu.edu.cn} ; ^{chenyaguang@tom.com} ; Shu-Xia Liu^a ; ^{liusx@nenu.edu.cn}
• 关键词：Main group metal ; Polyoxotungstate ; Polyaminepolycarboxylate ; Crystal structure ; Thermal property
• 刊名：Solid State Sciences
• 出版年：2013
• 出版时间：June, 2013
• 年：2013
• 卷：20
• 期：Complete
• 页码：80-85
• 全文大小：1731 K

文摘

Five supramolecular compounds of main group metals, polyoxotungstates ( and ) and trans-1,2-diaminocyclohexanetetraacetic acid (H₄DCTA), (NH₄)₄ [Ca₂Na₂(H₂O)₁₂(HDCTA)₂(HBW₁₂O₄₀)]¡¤6H₂O (1), (NH₄)₄[Sr₂Na₂(H₂O)₁₄(HDCTA)₂(HBW₁₂O₄₀)]¡¤7H₂O (2), (NH₄)₆[Al(DCTA)]₂[SiW₁₂O₄₀]¡¤12H₂O (3), (NH₄)₆[Pb₃(H₂O)₂(DCTA)₂][SiW₁₂O₄₀]¡¤8H₂O (4), [Na₆Bi₂(H₂O)₂₂(DCTA)₂] [SiW₁₂O₄₀]¡¤2H₂O(5), were synthesized in aqueous solution and were characterized by IR spectroscopy, thermogravitic analysis, powder and single-crystal X-ray diffraction techniques. Single-crystal structure analyses indicate that in 1 and 2, HDCTA and coordinate simultaneously to M ions, forming HDCTA-M-BW₁₂ chains; in 3 and 4 Al-DCTA complex and trinuclear Pb-DCTA complex are formed; in 5, HDCTA/DCTA combines Bi³⁺ and Na⁺, forming coordination polymer chains. A lot of hydrogen bonds between the building units fuse the building units into 3D supramolecular architectures. Thermal decomposition processes of these compounds changes with the structures of component units and metal ions.