The kinetics and stoicheiometry of silver(III) reduction by the octacyano-complexes of molybdenum(IV) and tungsten(IV)
作者:Edward T. Borish、Louis J. Kirschenbaum、Edoardo Mentasti
DOI:10.1039/dt9850001789
日期:——
The reactions of [Ag(OH)4]– with [Mo(CN)8]4– and [W(CN)8]4– involve an initial one-electron reduction of AgIII to AgII with second-order rate constants of 80 and 2.9 × 104 dm3 mol–1 s–1(25 °C, I= 1.2 mol dm–3), respectively. The tungstate reaction is quantitative with a stoicheiometry of 1 : 1. The reaction with [Mo(CN)8]4–, however, does not go to completion. There is apparently an equilibrium of
A kinetic study of the osmium(VIII) catalyzed oxidation of tellurium(IV) by Octacyanomolybdate(V) and octacyanotungstate(V) ions in an alkaline medium
作者:J.G. Leipoldt、C.R. Dennis、A.J. van Wyk、L.D.C. Bok
DOI:10.1016/s0020-1693(00)94707-8
日期:1979.1
Abstract The kinetics of the osmium(Vlll) catalyzed oxidation of Te(IV) by otacyanomolybdate(V) and octacyanotungstate[V) ions have been investigated in an alkaline medium. The reactions are first order with respect to M(CN)3−8 ion (M = Mo, W) and catalyst concentrations. The second order reaction rate constants are 2.756 × 103 M−1 sec−1 and 5.221 × 102 M−1sec−1 at 298 K respectively. A reaction mechanism
Simple Electrochemical Procedure for Measuring the Rates of Electron Transfer across Liquid/Liquid Interfaces Formed by Coating Graphite Electrodes with Thin Layers of Nitrobenzene
作者:Chunnian Shi、Fred C. Anson
DOI:10.1021/jp982605b
日期:1998.12.1
A simple, new method is described that allows the rates of electron transfer across liquid/liquid interfaces to be measured with unprecedented ease. The method takes advantage of thin layers of organic liquids that adhere to the surface of pyrolytic graphite electrodes. The method was applied to the nitrobenzene/water interface. Redox reactants dissolved in the nitrobenzene included decamethylferrocene and zinc tetraphenylporphyrin. Reactants in the adjoining aqueous phase were multiply charged anions, including Fe(CN)(6)(3-/4-), Ru(CN)(6)(4-), Mo(CN)(8)(4-), and IrCl62-. Rate constants for cross-phase electron transfer were evaluated and compared with those obtained in recent studies that employed the scanning electrochemical microscope that was invented and developed by A. J. Bard and co-workers.
Nichols, Peter J.; Grant, Michael W., Australian Journal of Chemistry, 1989, vol. 42, # 7, p. 1085 - 1102