[RCo(LNHpy)(HLNHpy)]+ by cyanide was studied in methanol as a solvent, where R = Et (1), Me (2), CF3CH2 (3), and bridging CH2 (4), HLNHpy = 2-(2-pyridylethyl)amino-3-butanone oxime and LNHpy− is its conjugate base. The second-order rate constants for the substitution of the 2-pyridylethyl moiety in [RCo(LNHpy)(HLNHpy)]+ by cyanide were found to be 19.1, 0.25, 2.2·10−2, and 1.7·10−2M−1·s−1 for R = Et, Me, CF3CH2
在作为溶剂的
甲醇中研究了 [RCo(LNHpy)(HLNHpy)]+ 与
氰化物的
配体取代反应,其中 R = Et (1)、Me (2)、CF3 (3) 和桥接
CH2 (4) , HLNHpy = 2-(2-pyridylethyl)amino-3-butanone
肟和 LNHpy- 是它的共轭碱。发现 [RCo(LNHpy)(HLNHpy)]+ 中 2-
吡啶基乙基部分被
氰化物取代的二级速率常数为 19.1、0.25、2.2·10-2 和 1.7·10-2M-1 ·s−1 分别为 R = Et、Me、CF3 和桥接 。从取代反应的温度和压力依赖性研究中,发现 [RCo(LNHpy)(HLNHpy)]+ 与
氰化物在
甲醇中反应的活化参数 (ΔH‡, ΔS‡, ΔV‡) 为,对于 R = Et:69±2 kJ·mol−1,+11±7 J·K−1 mol−1,+9.6±0.3 cm3·mol−1;R