A two-dimensional Cd(II) supramolecular compound [Cd(H2O)]2[Cd(H2PO4)2(HPO4)4 (PO4)2(MoO2)12(OH)6]· (bbi)· (H2bbi)2· 4H2O][bbi=1,1′-(1,4-butanediyl)bis(imidazole)] has been hydrothermally synthesized and structurally characterized by single crystal X -ray diffraction analysis .C30 H72Cd3Mo12P8N12O68, triclinic, P 1, a=13.274(5)Å, b=13.927(5)Å, c=23.360(5)Å,α=89.943(5)°,β=82.633(5)°,γ=77.037(5)°, Z=1, V=4172(2)Å3 , Mr=3425.24, Dc =2.656 g/cm3 ,μ=2.760 mm-1 , F(000)=3135, S=1.026, R=0.0499, wR=0.1150.The crystal structure analysis indicates that the Cd 2+cat-ions exhibit the two kinds of coordinated environments .One type is that the Cd 2+cation is coordinated by six bridged oxygen atoms of MoO6 units from two [P4Mo6O28(OH)3]9-[P4Mo6] anions, forming a geometry dinuclear subunit .Another type is that two bridged oxygen atoms of PO 4 from two P4 Mo6 anions connect two Cd 2+to form a bimetallic [CdO(H2O)]2 subunit.The above subunits are interlinked alternately to generate one dimensional inor -ganic chain .The adjacent chains are linked by bbi ligands and the lattice water molecules through H -bonding in-teractions to form a two dimensional supramolecular network .Moreover , the photoluminescent and photocatalytic activity for the degradation of methylene blue under UV light of the title compound were investigated .CCDC:1458162.%以1，4－二咪唑基－丁烷（bbi）为有机胺模板剂，利用中温水热合成方法获得了一个三维镉超分子化合物：[Cd（H2O）]2[Cd（H2PO4）2（HPO4）4（PO4）2（MoO2）12（OH）6]·（bbi）·（H2 bbi）2·4H2 O，并通过单晶X－射线衍射确定了其结构．该化合物分子式为C30 H72 Cd3 Mo12 P8 N12 O68，三斜晶系， P 1空间群， a＝13．274（5）Å， b＝13．927（5）Å， c＝23．360（5）Å，α＝89．943（5）°，β＝82．633（5）°，γ＝77．037（5）°， Z＝1， V＝4172（2）Å3， Mr ＝3425．24， Dc＝2．656 g／cm3，μ＝2．760 mm－1， F（000）＝3135， S＝1．026， R＝0．0499， wR＝0．1150．晶体结构分析表明，配合物中存在两种配位环境的Cd2＋．其中一种Cd2＋与来自两个[P4Mo6O28（OH）3]9－[P4Mo6]中的六个MoO6八面体的桥O配位形成Cd－（ P4 Mo6）2二聚物结构单元，另一种Cd2＋通过来自不同P4 Mo6中的PO4中的两个桥O连接成[CdO（H2O）]2二聚物结构单元．上述两种结构单元交替连接成为一维无机配位聚合物链．相邻的无机链通过bbi配体以及结晶水分子拓展成三维超分子网络．另外，还研究了该化合物的光催化降解亚甲蓝活性和荧光性质．CCDC：1458162
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