离子强度对配合物间电子转移反应速度的影响  

THE EFFECT OF IONIC STRENGTH UPON ELECTRON TRANSFER REACTION RATE

作　　者：邱体孝[1] 刘锡兰[1] 

机构地区：[1]四川师范学院化学系

出　　处：《四川师范学院学报（自然科学版）》1989年第1期44-47,共4页Journal of Sichuan Teachers College(Natural Science)

摘　　要：本文通过大量的实验得出:离子强度调节剂相同时,被研究反应的表观速度常数 Kapp 随离子强度Ⅰ增大而增大;离子强度相同时,Kapp 按NaClO_4、NaNO_3、NaCl、Na_2SO_4这一离子强度调节剂的顺序递增.并园满地解释了离子强度调节剂的阴离子通过静电效应促使前驱配合物的形成阶段加速,是被研究反应表观速度常数 Kapp 增大的主要原因.This article sums up the following two principles from a series of experimental data:when the same ionic strength is used as a regulator the apparent rate constant Kapp of the reaction studied increases with the increase of ionic strength I when the ionic strength is the same Kapp will increase to the order of NaClO_4,NaNO_3,NaCl,Na_2SO_4.The anion of the ionic strength regulator through electrostatic effect causes the increase of step acceleration in the formation of precursor complex and thus becomes the major cause of the increase of the apparent rate constant of reaction studied.

关 键 词：配位化学 氧化还原反应 配合物 

分 类 号：O611.66[理学—无机化学]