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1.
Chimatadar Shivamurti A. Koujalagi Sangappa B. Nandibewoor Sharanappa T. 《Transition Metal Chemistry》2001,26(1-2):241-245
The oxidation of HgI by CeIV has been studied in aqueous H2SO4. A minute amount (10–6 mol dm–3) of OsVIII is sufficient to catalyse the reaction. The active catalyst, substrate and oxidant species are H2OsO5, [Hg2(SO4)HSO4]– and H3Ce(SO4)–
4, respectively. Possible mechanisms are proposed and the reaction constants involved have been determined. 相似文献
2.
Chimatadar Shivamurti A. Koujalagi Sangappa B. Nandibewoor Sharanappa T. 《Transition Metal Chemistry》2001,26(6):662-667
The CrVI oxidation of HgI in an aqueous acid medium occurs to a modest extent only in presence of PdII and in H2SO4 above ca. 0.20 mol dm–3. The reaction is first order in [CrVI] in the presence of PdII catalyst. The order in [HgI] is less than unity, whereas that in [PdII] is unity. Increase in [H2SO4] accelerates the reaction rate. The added products, CrIII and HgII, do not significantly effect the reaction rate. A mechanism involving HCrO4
– and PdCl+ as the reactive species of oxidant and catalyst respectively, is proposed. The reaction constants involved in the mechanism have been evaluated. 相似文献
3.
Chimatadar Shivamurti A. Koujalagi Sangappa B. Nandibewoor Sharanappa T. 《Transition Metal Chemistry》2002,27(7):704-711
Quinolinium dichromate (QDC) oxidation of TlI in aqueous AcOH containing large concentrations of HCl is considerably accelerated both by H+ and Cl– ions as well as by increasing the AcOH concentration in the medium; oxidation is made possible by altering the redox potentials. The reaction is first order in oxidant and in reductant but apparently less than unit order in [Cl–] and nearly second order in [H+]. The active species of QDC and TlI are ClCrO3
– and TlCl2
– respectively. A possible mechanism is proposed and verified, and the reaction constants involved have been evaluated. 相似文献
4.
Chimatadar Shivamurti A. Koujalagi Sangappa B. Nandibewoor Sharanappa T. 《Transition Metal Chemistry》2002,27(1):62-68
The oxidation of PdII by Fe(CN)
6
3–
has been studied in 55% MeCO2H–H2O containing 4.0 mol dm–3 HCl, the oxidation being made possible by altering redox potentials. The active species of PdII and Fe(CN)
6
3–
are PdCl
3
–
and H2Fe(CN)
6
–
, respectively. A possible mechanism is proposed and verified, and the reaction constants involved have been evaluated. 相似文献
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