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Synthesis and characterization of two inorganic–organic hybrid polyoxometalates bridged by Keggin-type building blocks and copper(II) organonitrogen complexes

机译:两种由Keggin型构件和铜(II)有机氮配合物桥接的无机-有机杂多金属氧酸盐的合成与表征

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摘要

Two new inorganic–organic hybrid compounds, namely [Cu(dab)2]2[α-SiW12O40]·H2O (dab = 1,2-diaminobenzene) and [Cu(dafo)3]2[Cu(dafo)2(H2O)2][α-PMo12O40]2·4H2O (dafo = 4,5-diaza- fluorene-9-one) have been synthesized under hydrothermal conditions and structurally characterized by single-crystal X-ray diffraction. [Cu(dab)2]2[α-SiW12O40]·H2O exhibits an alternating 2D ladder-like structure built of [α-SiW12O40]4− and [Cu(L)2]2+ units. As the inorganic building block, the Keggin-type polyoxoanion [α-SiW12O40]4− is linked to two metal–organic complexes [Cu(dab)2]2+ through different kinds of oxygen atoms (terminal and bridging). [Cu(dafo)3]2[Cu(dafo)2(H2O)2][α-PMo12O40]2·4H2O shows an extended 3D supramolecular network via hydrogen bonding. Both complexes were characterized by physico-chemical and spectroscopic methods.
机译:两种新的无机-有机杂化化合物,即[Cu(dab) 2 ] 2 [α-SiW 12 O 40 ]·H 2 O(dab = 1,2-二氨基苯)和[Cu(dafo) 3 ] 2 [Cu(dafo ) 2 (H 2 O) 2 ] [α-PMo 12 O 40 ] 2 ·4H 2 O(dafo = 4,5-二氮杂芴-9-one)已在水热条件下合成,并通过单晶X表征结构射线衍射。 [Cu(dab) 2 ] 2 [α-SiW 12 O 40 ]·H 2 O展示了一种由[α-SiW 12 O 40 ] 4-和[Cu( L) 2 ] 2 + 个单位。作为无机结构单元,Keggin型聚氧阴离子[α-SiW 12 O 40 ] 4-与两个金属有机配合物相连[Cu(dab) 2 ] 2 + 通过不同类型的氧原子(末端和桥接)形成。 [Cu(dafo) 3 ] 2 [Cu(dafo) 2 (H 2 O) 2 ] [α-PMo 12 O 40 ] 2 ·4H 2 O显示一个扩展通过氢键的3D超分子网络。两种配合物均通过物理化学和光谱法表征。

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