Title of article :
Cation effects on the voltammetric behavior of α-Keggin-type [SiMo12O40]4− and [PMo12O40]3− complexes in CH3COCH3 and CH3CN
Author/Authors :
Himeno، نويسنده , , Sadayuki and Takamoto، نويسنده , , Masayo and Ueda، نويسنده , , Tadaharu، نويسنده ,
Issue Information :
روزنامه با شماره پیاپی سال 2000
Pages :
6
From page :
49
To page :
54
Abstract :
The effect of small cations such as H+, Li+ and Na+ on the voltammetric behavior of α-Keggin-type [SiMo12O40]4− and [PMo12O40]3− complexes was investigated in CH3COCH3 and CH3CN. For the [SiMo12O40]4− complex, the presence of Li+ or Na+ caused the one-electron waves to be converted into a two-electron wave at ca. 0.3 V more positive than the first one-electron wave. In the presence of Li+ or Na+, the [PMo12O40]3− complex underwent a two-electron reduction at the same potential as the original first one-electron wave in CH3COCH3, whereas it exhibited only successive one-electron waves in CH3CN. The addition of a trace amount of H+ produced new two-electron waves at more positive potentials. These findings give a clue to the understanding of the reactivity of polyoxometalates as redox catalysts.
Keywords :
CH3COCH3 , Voltammetry , Li+ , n=3 , Si , 4) , CH3CN , NA+
Journal title :
Journal of Electroanalytical Chemistry
Serial Year :
2000
Journal title :
Journal of Electroanalytical Chemistry
Record number :
1667370
Link To Document :
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