Kinetics and mechanism of the oxidation of hypophosphite with N-chlorotoluene-p-sulphonamide (chloramine T) catalysed by osmium (VIII) in alkaline solution
作者:Juzar Hussain、Som Kant Mishra、Preen Dutt Sharma
DOI:10.1039/dt9910000089
日期:——
The kinetics of osmium(VIII)-catalysed oxidation of hypophosphite, H2PO2–, with chloramine T (cat, N-chlorotoluene-p-sulphamide) was studied by estimating the latter iodometrically. The rate law (i) holds for [OH–]= 0.02–0.142, [H2PO2–]= 0.001–0.002, and [OsVIII]= 1 × 10–5 to 1 × 10–4 mol dm–3 where k1 is defined by equation (ii), k2 and k3 are the equilibrium formation constants ≳d[cat]//dt=k1k2[
通过碘量法对latter (VIII)催化的亚磷酸氢盐H 2 PO 2 –与氯胺T(猫,N-氯甲苯-对硫酰胺)的氧化动力学进行了研究。速率定律(i)适用于[OH – ] = 0.02–0.142,[H 2 PO 2 – ] = 0.001–0.002和[Os VIII ] = 1×10 –5至1×10 –4 mol dm –3其中k 1由等式(ii)定义,k 2和k 3是平衡形成常数≳d [cat] // d t=k 1 k 2 [cat] [Os VIII ] [H 2 PO 2 – ] // 1 + k 1 [OH – ] + k 2 [H 2 PO 2 – ] + k 1 k 3 [OH – ] [H 2 PO 2 – ](i),[OsO 3(OH)3 ] – + OH – [省略的图形],[OsO 4(OH)2 ] 2– + H 2 O(ii)络合物[OsO 3(OH)3(H 2)