报道了十一钨锰硅酸盐异构体α-,βi-KnH6-n[SiW11Mn(H2O)O39].xH2O(βi=β1,β2,β3)的合成方法及其电化学性质。得出杂多阴离子的极谱E1/2顺序为:β2>β1>β3>α。讨论了杂多阴离子的结构对其氧化还原性的影响,催化活性实验表明,合成化合物对烯烃环氧化反应具有良好的催化作用.
Synthetic method and electrochemical properties ofundecatungstomanganosilicate isomers α- and βi-KnH6-n[SiW-Mn(H2O)O39].xH2O(βi=β1,β2,β3) are reported. The effect of structure on the redox has been investigated. The order of polarographic half-wave potential E1/2 of heteropoly anions as follows:β2>β1>β3>α in epoxidation of maleic acid with H2O2 is β3(87.86%)>β1(82.50%)>α(64.20%)>β2(56.10%).
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