作者:Rajagopal Gurumurthy、Kulathu Iyer Sathiyanarayanan、Mannathusamy Gopalakrishnan
DOI:10.1246/bcsj.65.1096
日期:1992.4
catalytic effect of mercury has been observed and the order with respect to Hg(II) is one. Electron-releasing substituents generally accelerate the rate while electron-withdrawing groups retard the rate. A good correlation is found to exist between log k2 and Hammett σ constants. Two mechanisms have been proposed, one in presence of Hg(II) and the other in the absence of Hg(II). In presence of Hg(II), rate
在 50% (v/v) 乙醇水溶液中研究了溴胺-B(N-溴苯磺酰胺的钠盐)氧化几种取代的苯基硫代乙酸乙酯的动力学。已使用磷酸氢二钠和磷酸二氢钠缓冲液。该反应是总的二级反应,每个反应物都是一级反应。已经观察到汞的催化作用,并且相对于 Hg(II) 的顺序是一个。放电子取代基通常会加快速率,而吸电子基团会减慢速率。发现 log k2 和 Hammett σ 常数之间存在良好的相关性。已经提出了两种机制,一种是存在 Hg(II),另一种是不存在 Hg(II)。存在 Hg(II) 时,速率 = k[C1][H2OBr]+ 且不存在 Hg(II),