Kinetics of the displacement of chloride in 5-substituted-1,10-phenanthrolinedichloropalladium(II) complexes
作者:Matteo Cusumano、Giovanni Guglielmo、Vittorio Ricevuto
DOI:10.1039/dt9800002044
日期:——
rate constants for the displacement of the first chloride by the nucleophiles Br–, I–, SCN–, and SC(NH2)2 in the complexes [Pd(L–L)Cl2](L–L = 1,10-phenanthroline, 5-chloro-1,10-phenanthroline, 5-nitro-1,10-phenanthroline, or 5-methyl-1,10-phenanthroline) have been determined in dimethylformamide at 25 °C. The rate constants, as well as the discriminating ability of the complexes, increase on decreasing
配合物中[Pd(L–L)Cl 2 ](L–L = 1,10 )中亲核试剂Br –,I –,SCN –和SC(NH 2)2取代第一氯的速率常数。-邻菲咯啉,5-氯-1,10-菲咯啉,5-硝基-1,10-菲咯啉或5-甲基-1,10-菲咯啉已在25°C的二甲基甲酰胺中测定。速率常数以及复合物的识别能力随着不可替代配体L–L的p K a的降低而增加。