A zinc-potassium substituted sandwich-type antimonotungstate Na9[Zn3K3(H2O)9] [B-α-SbW9O33]2·44H2O (1) was synthesized and characterized by elemental analysis, IR spectra and sin-gle-crystal X-ray diffraction. The title compound crystallizes in the monoclinic space group C2/c with a= 1.39993(12) nm, b = 2.3176(2) nm, c = 3.2088 (3) nm, β = 98.8040(10)°, V =10.2880(15) nm3, Z = 4, Dc= 3.930 g/cm3, GOOF = 1.026, R1= 0.0436 and wR2= 0.1035. X-ray crystal structural analysis reveals that the molecular unit of 1 is constructed from two trivacant [B-α-SbW9O33]9- building blocks sandwiching a hexagon zinc-potassium [Zn3K3(H2O)9]9+ core via twelve lacunary oxygen atoms. The photocatalytic measurements illustrate that 1 can partly inhibit the photodegradation of azophloxine.%合成了一种Zn-K取代的夹心型锑钨酸盐Na9[Zn3 K3(H2 O)9][B-α-SbW9 O33]2·44 H2 O(1),并借助元素分析、红外光谱和X射线单晶衍射等方法对其进行了表征.标题化合物属于单斜晶系,C2/c空间群,晶胞参数:a=1.39993(12)nm,b=2.3176(2)nm,c=3.2088(3)nm,β=98.8040(10)°,V=10.2880(15)nm3,Z=4,Dc=3.930 g/cm3,GOOF=1.026,R1=0.0436,wR2=0.1035.X射线单晶衍射结构分析表明,化合物1分子结构由2个三缺位锑钨构筑块[B-α-SbW9 O33]9-通过12个缺位氧原子与1个六边形锌钾簇[Zn3 K3(H2O)9]9+相连而成.光催化结果表明,化合物1在一定程度上可以抑制偶氮荧光桃红的光降解.
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