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以Keggin型钛取代钨磷酸钾和醋酸银为反应物合成了1个新的多金属氧酸盐Ag4H3PTi2W10O40.16H2O(1),通过X射线单晶衍射分析确定了其晶体结构,通过ICP分析和热重分析确定了其组成,通过红外光谱和固体漫反射光谱表征了其性质.单晶结构分析表明,化合物1属于四方晶系,I4/m空间群,晶胞参数a=b=1.39905(13)nm,c=1.14358(18)nm,V=2.2384(5)nm3,Z=2,R1=0.0550,wR2=0.1590.化合物1中的Ag+均为六配位,每个Ag+同时与3个多阴离子上的2个端氧和4个桥氧配位形成{AgO6}单元,这些{AgO6}将该多阴离子连接成三维网络结构.
A novel polyoxometallate Ag4H3PTi2W10O40.16H2O (1) was synthesized by substituting Keggin-type titanium for potassium tungstophosphate and silver acetate. The crystal structure was confirmed by single-crystal X-ray diffraction analysis. The structure of the compound 1 was characterized by Fourier transform infrared spectroscopy (FTIR) and diffuse reflectance spectroscopy (FTIR). The single crystal structure analysis showed that compound 1 belongs to the tetragonal system, space group I4 / m with unit cell parameter a = b = 1.39905 (1) nm, c = 1.14358 (18) nm, V = 2.2384 (5) nm3, Z = 2, R1 = 0.0550 and wR2 = 0.1590. The Ag + in compound 1 are all hexacoordinated. The 2 terminal oxygen and 4 bridge oxygen coordinate to form {AgO6} units, and these {AgO6} link the polyanions into a three-dimensional network structure.