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Selective incorporation of auxiliary organic ligands in metal-organic frameworks based on twisted Π-shaped building blocks

机译:在扭曲的-形结构单元的基础上,选择性地将辅助有机配体掺入金属有机骨架中

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摘要

Hydrothermal reactions of Cu(II) salts and 2,2′,4,4′- biphenyltetracarboxylic acid (2,2′,4,4′-H_4bptc) in the presence of pyridyl ligands yielded three isomorphous 3D metal-organic coordination polymers formulated as [Cu_2(2,2′,4,4′-bptc) (L)_x]?H_2O [x = 2 for L = pyridine; x = 1 for L = bis(4-pyridyl)ethene and bis(4-pyridyl)ethane]. In the structure, the distorted paddlewheel [Cu_2(COO)_4] motif and the twisted Π-shaped 2,2′,4,4′-bptc serve as dissimilar 4-connected SBUs to generate a 3D [Cu_2(2,2′,4,4′-bptc)] mother framework with the PtS topology, which selectively accommodates pyridine or bis(pyridyl) ligands of appropriate size.
机译:Cu(II)盐与2,2',4,4'-联苯四甲酸(2,2',4,4'-H_4bptc)在吡啶基配体存在下的水热反应产生了三种同构的3D金属-有机配位聚合物为[Cu_2(2,2',4,4'-bptc)(L)_x] = H_2O [对于L =吡啶,x = 2;对于L =双(4-吡啶基)乙烯和双(4-吡啶基)乙烷,x = 1。在结构中,扭曲的桨轮[Cu_2(COO)_4]图案和扭曲的Π形2,2',4,4'-bptc用作异形的4连接SBU,以生成3D [Cu_2(2,2' ,4,4'-bptc)]具有PtS拓扑的母框架,可选择性容纳适当大小的吡啶或双(吡啶基)配体。

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