Under hydrothermal conditions, a new “S”-shaped Cu-substituted tetramer tungstoantimonate, HKNa₂(H₂en)₆[Cu(en)(H₂O)]₂[KNaCu₃(H₂O)₇(B-a-SbW₉O₃₃)₂]₂⋅16H₂O (1, en = 1,2-ethylenediamine) was synthesized in reactions of the Na₉[SbW₉O₃₃]·19.5H₂O precursor with CuCl₂⋅2H₂O and potassium acetate in the presence of en and characterized by IR spectrum, thermogravimetric analysis (TGA), powder X-ray diffraction (PXRD) and single-crystal X-ray diffraction, respectively. Polyoxoanion 1 consists of two asymmetric sandwich-type polyanions {KNaCu₃(H₂O)₇(B-a-SbW₉O₃₃)₂} linked by two structurally equivalent [Cu4(en)(H₂O)]²⁺ bridges. The electrochemical properties and photocatalytic activities have been investigated, displaying outstanding photocatalytic and electrocatalytic activities for the photodegradation of MB and H₂O₂/NO₂⁻/BrO₃⁻ reduction.

在水热条件下，一种新的“ S”形Cu取代的四聚体钨锑酸盐HKNa ₂（H ₂ en）₆ [Cu（en）（H ₂ O）] ₂ [KNaCu ₃（H ₂ O）₇（Ba-SbW ₉ ø ₃₃）₂ ] ₂ ⋅16H ₂ O（1，EN = 1,2-乙二胺）以Na的反应合成₉ [线控₉ ø ₃₃ ]·19.5H ₂ ö前体与氯化亚铜₂ ⋅2H ₂O和乙酸钾在en的存在下分别通过红外光谱，热重分析（TGA），粉末X射线衍射（PXRD）和单晶X射线衍射进行表征。聚氧阴离子1由两个不对称的夹心型聚阴离子{KNaCu ₃（H ₂ O）₇（Ba-SbW ₉ O ₃₃）₂ }通过两个结构上等价的[Cu4（en）（H ₂ O）] ²⁺桥连接。研究了电化学性能和光催化活性，显示出对MB和H ₂ O ₂ / NO光降解的出色的光催化和电催化活性。₂ ^- /的BrO ₃ ^-还原。