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本文报道了α-和β-[SiW_9O_(37)Cr_3(H_2O)_3]~(7-)杂多阴离子铯、钾盐的合成、表征及其催化亚碘酰苯环氧化烯烃的性质.元素分析、磁化率、红外光谱及FAB质谱等数据表明,该杂多阴离子为三取代的Keggin结构.α-和β-[siW_9O_(37)aCr_3(H_2O)_3]~(7-)具有催化PhIO环氧化反-二苯乙烯、环己烯和苯乙烯生成相应环氧化物的性质。
In this paper, the synthesis and characterization of cesium and potassium salts of α- and β- [SiW_9O_ (37) Cr_3 (H_2O) _3] ~ (7-) heteropolyanions and their catalytic properties for the oxidation of iodosobenzene epoxidized olefins were reported. The data of magnetic susceptibility, FTIR spectra and FAB mass spectra showed that the heteropolyanion was a trisubstituted Keggin structure.α- and β- [siW_9O_ (37) aCr_3 (H_2O) _3] ~ (7-) Oxidation of stilbene, cyclohexene and styrene to produce the corresponding epoxide properties.