Unprecedented cyclic [Mo6O19]2−cluster and five organic–inorganic hybrids based on polyoxomolybdates and 4-amino-3,5-bis(pyridyl)-1,2,4-triazole
Unprecedented cyclic [Mo6O19]2−cluster and five organic–inorganic hybrids based on polyoxomolybdates and 4-amino-3,5-bis(pyridyl)-1,2,4-triazole
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DOI：
10.1039/c002063j
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发表时间：
2011-02
期刊：
影响因子：
3.1
通讯作者：
Ming-Xing Li;Huiyun Chen;Jin-Peng Geng;Xiang He;M. Shao;Shourong Zhu;Zhao-Xi Wang
中科院分区：
文献类型：
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作者：
Ming-Xing Li;Huiyun Chen;Jin-Peng Geng;Xiang He;M. Shao;Shourong Zhu;Zhao-Xi Wang
五种新型杂化化合物，[Mo8O26Cu2(4-abpt)2]n·4nH2O (1)、(4-H2abpt)2[Mo8O26] (2)、[Mo8O26Cu2(3-abpt)2(H2O)2]n (3)、[MoO4Cu(3-abpt)(H2O)]n (4) 和通过MoO3/(NH4)6Mo7O24与4-氨基-3,5-双(3/4-吡啶基)-1,2,4-三唑(3/4-abpt)和相应的金属盐反应制备[Mo6O19Co(3-abpt)2]n·4nH2O(5)。化合物 1 是一种二维配位聚合物，含有延伸的 γ-[Mo8O26]4− 和 [Cu2(4-abpt)2]4+ 带。化合物 2 是由连接 β-[Mo8O26]4− 和 4-H2abpt2+ 的氢键组成的超分子杂化聚集体。化合物 3 表现出由孤立的 β-[Mo8O26]4−簇和 [Cu2(3-abpt)2]4+ 构建的二维矩形网络。在化合物4中，每个MoO42−阴离子连接两个Cu(II)离子形成S型[CuMoO4]n链，该链进一步通过双齿3-abpt连接形成二维波状网络。在配合物5中，前所未有的环状[Mo6O19]2−簇连接两个相邻的六钼酸盐和两个Co(II)离子形成2D [CoMo6O19]n网络，该网络进一步由四齿3-abpt支撑以生成3D金属有机框架。这些化合物在 250 °C 下具有热稳定性。通过 PXRD 分析最终残留物的复合材料。
Five novel hybrid compounds, [Mo8O26Cu2(4-abpt)2]n·4nH2O (1), (4-H2abpt)2[Mo8O26] (2), [Mo8O26Cu2(3-abpt)2(H2O)2]n (3), [MoO4Cu(3-abpt)(H2O)]n (4), and [Mo6O19Co(3-abpt)2]n·4nH2O (5) were prepared by reacting MoO3/(NH4)6Mo7O24 with 4-amino-3,5-bis(3/4-pyridyl)-1,2,4-triazole (3/4-abpt) and corresponding metal salts. Compound 1 is a 2D coordination polymer containing extended γ-[Mo8O26]4− and [Cu2(4-abpt)2]4+ ribbons. Compound 2 is a supramolecular hybrid aggregate composed of H-bond linking β-[Mo8O26]4− and 4-H2abpt2+. Compound 3 exhibits a 2D rectangular network constructed by isolated β-[Mo8O26]4−clusters and [Cu2(3-abpt)2]4+. In compound 4, each MoO42− anion links two Cu(II) ions to form a S-type [CuMoO4]n chain, which is further linked by bidentate 3-abpt to form a 2D wave-like network. In complex 5, unprecedented cyclic [Mo6O19]2−cluster links two neighbouring hexamolybdates and two Co(II) ions to form a 2D [CoMo6O19]n network, which is further pillared by tetradentate 3-abpt to generate a 3D metal–organic framework. These compounds are thermally stable under 250 °C. The composites of the final residues were analyzed by PXRD.