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A novel Zr-substituted polyoxometalate(POM) H2K3[Na6(H2O)9][Zr3Na3O3(H2O)3-(GeW9O34)2]·12H2O(1) has been made under hydrothermal conditions. 1 was characterized by infrared spectrum, thermogravimetric analysis, powder X-ray diffraction and single-cry