Adduct formation of copper(II) chelates of 1-hydroxypyrazole 2-oxides with substituted pyridines
作者:Fumiaki Kai、Hideaki Haraga、Hiroshi Kobayashi
DOI:10.1016/s0277-5387(00)84062-0
日期:1985.1
determined for the adduct formation of 10 copper(II) chelates of the derivatives of 1-hydroxypyrazole 2-oxide with nine substituted pyridines at room temperature in chloroform solution. These adducts were shown to have 1:1 stoichiometry. All the stabilities of the adducts were governed by: (1) σ-donating ability of the nitrogen atom in the substituted pyridines to the copper(II) chelates, (2) electron-attracting
摘要在室温下,在氯仿溶液中确定了1-羟基吡唑2-氧化物衍生物与九个取代吡啶的10个铜(II)螯合物的加合物形成平衡常数。这些加合物显示出化学计量比为1:1。加合物的所有稳定性受以下因素支配:(1)取代吡啶中氮原子对铜(II)螯合物的σ供电能力;(2)3位和4位取代基的电子吸引力(3)螯合配体的吡唑环中取代基的极性取代基常数的大小。