Physical properties, ligand substitution reactions, and biological activity of Co(<scp>iii</scp>)-Schiff base complexes
作者:A. Paden King、Hendryck A. Gellineau、Samantha N. MacMillan、Justin J. Wilson
DOI:10.1039/c8dt04606a
日期:——
ascorbate led to a change in the reaction profile and kinetics, but no change in the final product. The cytotoxic activity of the complexes correlates with both the ligand exchange rate and reduction potential, with the more easily reduced and rapidly substituted complexes showing higher toxicity. These relationships may be valuable for the rational design of Co(iii) complexes as anticancer or antiviral
合成了通式[Co(席夫碱)(L)2]+的四种钴(iii)络合物,其中L是氨(NH3)或3-氟苄胺(3F-BnNH2)。通过核磁共振波谱、质谱和 X 射线晶体学对配合物进行了表征。研究了它们的电化学性质、配体取代机制和水性缓冲液中的配体交换速率。这些物理特性与复合物的细胞摄取和抗癌活性相关。配合物经历连续的、解离的配体取代,交换率在很大程度上取决于轴向配体。Eyring 分析表明,相对配体交换率在很大程度上受到复合物活化熵差异的影响,而不是焓差异。在抗坏血酸存在下进行取代反应导致反应曲线和动力学发生变化,但最终产物没有变化。复合物的细胞毒活性与配体交换率和还原电位相关,更容易还原和快速取代的复合物显示出更高的毒性。这些关系对于合理设计 Co(iii) 配合物作为抗癌或抗病毒前药可能很有价值。
The Oxygen-carrying Synthetic Chelate Compounds. VII. Preparation<sup>1</sup>
作者:R. H. Bailes、M. Calvin
DOI:10.1021/ja01200a013
日期:1947.8
Effect of Ligand Structure on Ethylene Oligomerization over Salicylaldehyde Imine Nickel Complexes: Experiments and Calculations
作者:Liduo Chen、Jinyan Tan、Tianyu Lan、Hongliang Huo、Liyuan Sun、Yan Jiang、Na Zhang、Cuiqin Li、Jun Wang
DOI:10.1002/aoc.7276
日期:2023.12
different electron-donating and electron-withdrawing groups on benzenerings were synthesized, using ethylenediamine, salicylaldehyde derivatives with different substituents and nickel chloride hexahydrate as raw materials. Structure characterization, such as elemental analysis, Fourier transform infrared (FT-IR), nuclearmagneticresonance (NMR), ultraviolet–visible (UV–Vis), and electrospray ionization