Complexing ability of some γ-lactone derivatives. Thermal, magnetic and spectral studies on cobalt(II), nickel(II) and copper(II) complexes and their base adducts
作者:Ali El-Dissouky、Ahmed Fahmy、Adel Amer
DOI:10.1016/s0020-1693(00)87785-3
日期:1987.10
Abstract The complexes of some γ-lactone derivatives with cobalt(II), nickel(II) and copper(II) have been synthesized and formulated as [ML 2 ]· n H 2 O, M = Co 2+ , Ni 2+ or Cu 2+ , n = 2 or 3 and L = anion of the corresponding ligand. Their structures have been suggested on the basis of analysis, spectral (UV-Vis, IR) and magnetic susceptibility data. The thermal analysis revealed the non-coordinated
摘要合成了一些γ-内酯衍生物与钴(II),镍(II)和铜(II)的配合物,并配制成[ML 2]·n H 2 O,M = Co 2+,Ni 2+或Cu 2+,n = 2或3,L =相应配体的阴离子。根据分析,光谱(UV-Vis,IR)和磁化率数据提出了它们的结构。热分析表明这些配合物中水不协调。红外光谱表明存在与氢键配位的水分子,并且γ-内酯是通过苯甲酰基羰基和去质子化的羟基氧原子与金属离子配位的一元二齿双齿。内酯在配合物结构上的体积和电子性质从电子光谱数据中得到合理化。用分光光度法研究了具有不同路易斯基础的配合物之间的相互作用。计算出配体场参数并与配体分子的体积效应有关。这些参数指示基本分子的轴向连接,并且赤道平面被MO 4占据,M = Co 2+,Ni 2+或Cu 2+发色团。电子间排斥参数表明这些配合物的离子性质。还讨论了理想结构的变形程度。发色团。电子间排斥参数表明这些配合物的离子性