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In this paper the heteropoly complexes K<sub>n</sub>[Ga（H<sub>2</sub>0）MW<sub>11</sub>O<sub>3</sub>9)]·xH<sub>2</sub>0 [M=Cu（Ⅱ）, Co（Ⅱ）, Cr（Ⅲ）,Fe（Ⅲ）, Mn（Ⅳ）] have been prepared in this laborat