4-nitrobenzonitrile. The kinetics of their base hydrolysis to coordinated carboxamides have been measured and found to follow a simple second order rate law with rate constants of 180 ± 4 M−1 s−1 and 510 ± 90 M−1 s−1 at 25°C and ionic strength 1.0 for the ortho and para isomers respectively. Rate constants for the hydrolysis of eleven coordinated substituted aromatic nitriles have been found to follow a Hammett
合成了两种新的五胺
钴(III)芳族有机腈配合物,即2-和
4-硝基苄腈的配合物。已测量了其碱
水解为配位羧酰胺的动力学,并发现其遵循简单的二阶速率定律,在25°C和25°C下的速率常数为180±4 M-1 s-1和510±90 M-1 s-1。邻和对位异构体的离子强度分别为1.0。已发现11种配位取代的芳族腈的
水解速率常数遵循Hammett型相关性,其中在25°C和离子强度1下log k =1.93σ+ 1.30。这些自由和协调的腈
水解速率的哈米特图是过渡态效应,而不是基态现象。