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通过使用联咪唑及其衍生物2种有机配体在水热条件下合成了2个多酸基化合物[Ag4(biz)4][H2P2Mo5O23]·2H2O(1)和[Ag4(bbiz)4][HPWⅥ10WⅤ2O40](2)(biz=2,2-联咪唑,bbiz=5-丁基-2,2-联咪唑),并通过单晶X-射线衍射、元素分析和红外光谱对其进行了表征。化合物1包含双核银簇[Ag2(biz)2]2+,[P2Mo5O23]6-多阴离子通过提供端基氧原子连接相邻双核银簇而构筑了一维链结构。在化合物2中,每个Keggin型阴离子提供4个桥氧原子来连接4个双核银簇[Ag2(bbiz)2]2+,从而构筑一个二维的层结构。此外,对标题化合物的电化学、光催化以及荧光性能也进行了研究。
Two polyoxometalate compounds [Ag4 (biz) 4] [H2P2Mo5O23] · 2H2O (1) and [Ag4 (bbiz) 4] were synthesized under hydrothermal conditions by using two organic ligands of biimidazole and its derivatives (Biz = 2,2-biimidazole, bbiz = 5-butyl-2,2-biimidazole) was synthesized and characterized by single crystal X-ray diffraction, elemental analysis and infrared spectroscopy. Compound 1 contains binuclear silver clusters [Ag2 (biz) 2] 2 + and [P2Mo5O23] 6-polyanions, which form a one-dimensional chain structure by providing terminal oxygen atoms to link adjacent binuclear silver clusters. In compound 2, each Keggin-type anion provides 4 bridging oxygen atoms to connect 4 binuclear silver clusters [Ag2 (bbiz) 2] 2+, thereby constructing a two-dimensional layer structure. In addition, the electrochemical, photocatalytic and fluorescent properties of the title compound have also been investigated.