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羟肟类化合物能与Cu、Ni、Co、Fe等形成稳定络合物。羟肟类配位体与金属离子的螯合反应是通过酚羟基氧原子及肟基氮原子实现的。在配位体的结构-性能关系研究中,对决定σ配键强度的配位原子电荷密度的贡献已被广泛重视。我们曾用Hückel分子轨道法计算配位原子的电荷密度及有关键序,并对它们在萃取金属离子反应中的贡献作了评价。文献中对金属原子反馈特性影响的研究尚少记载。Burger等认为,由3d~5—3d~(10)过渡金属与双肟或水杨醛肟衍生物所形成络合物的稳定性受σ配键与反馈键的支配。
Hydroxime compounds with Cu, Ni, Co, Fe and other stable complexes formed. The chelation reaction of the hydroxyoxime ligand with the metal ion is achieved by the phenolic hydroxyl oxygen atom and the oximino nitrogen atom. In the study of the structure-property relationship of ligands, the contribution of the charge density of coordination atoms that determine the bond strength of σ has been widely studied. We have used the Hückel molecular orbital method to calculate the charge density and the key order of coordination atoms and evaluated their contribution to the extraction of metal ions. Literature on the metal atom feedback characteristics of the research is still not documented. According to Burger et al., The stability of complexes formed by 3d ~ 5-3d ~ (10) transition metal with bi-oxime or salicylaldoxime derivatives is dominated by σ-bond and feedback bond.