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Octahedral Copper(II) Carboxylates with 1,10-Phenanthroline: Synthesis, Structural Characterization, DNA-Binding and Anti-Fungal Properties
Journal of Chemical Crystallography ( IF 0.8 ) Pub Date : 2020-10-06 , DOI: 10.1007/s10870-020-00866-x
Muhammad Iqbal , Saqib Ali , Muhammad N. Tahir , Paul A. Anderson

Two mono-nuclear axially distorted octahedral copper(II) complexes have been prepared and characterized via FT-IR, UV–Visible, elctrochemical, electron spin resonance and powder and single crystal XRD techniques. The complexes consist of a phenanthroline and two carboxylate ligands each bonded in bidentate fashion. Carboxylates are ortho-nitro-2-phenyl acetate (L1) and para-chloro-2-phenyl acetate (L2). Structural study showed that both complexes possess Jahn–Teller distorted octahedral geometry. The bulk purity was assessed from the matching experimental and simulated powder XRD spectra. The results of spectroscopic techniques are consistent with each other. ESR data revealed single electron occupancy of dx2 − y2 orbital with 2B1g as ground state typical of tetragonally distorted octahedral geometry. Electrochemical solution study showed diffusion controlled electron transfer processes with diffusion co-efficient values of 10.323 × 10–8 cm2s–1 and 0.972 × 10–8 cm2s–1 for 1 and 2. Complexes exhibited excellent DNA-binding activity studied via UV–Visible spectroscopy, cyclic voltammetry, florescence spectroscopy and viscometry yielding Kb values of 1.871 × 104 M–1 (1) and 1.577 × 104 M–1 (2), 0.38 × 104 M–1 (1) and 6.39 × 104 M–1 (2) and 2.1 × 106 M–1 (1) and 2.0 × 06 M–1 (2), respectively, for the first three techniques. Complexes possess good antifungal activity against three fungal strains.

中文翻译:

具有 1,10-菲咯啉的八面体铜 (II) 羧酸盐:合成、结构表征、DNA 结合和抗真菌特性

制备了两种单核轴向扭曲八面体铜 (II) 配合物,并通过 FT-IR、UV-Visible、电化学、电子自旋共振以及粉末和单晶 XRD 技术表征。该复合物由一个菲咯啉和两个羧酸盐配体组成,每个配体以双齿方式键合。羧酸盐是邻-硝基-2-苯乙酸酯(L1)和对-氯-2-苯乙酸酯(L2)。结构研究表明,这两种配合物都具有 Jahn-Teller 扭曲八面体几何形状。从匹配的实验和模拟粉末 XRD 光谱评估整体纯度。光谱技术的结果彼此一致。ESR 数据显示 dx2 - y2 轨道的单电子占有率,2B1g 作为四方扭曲八面体几何的典型基态。电化学溶液研究表明,扩散控制电子转移过程的扩散系数值为 10.323 × 10–8 cm2s–1,1 和 2 的扩散系数值为 0.972 × 10–8 cm2s–1。通过 UV-Visible 研究,复合物表现出优异的 DNA 结合活性光谱法、循环伏安法、荧光光谱法和粘度法产生的 Kb 值为 1.871 × 104 M-1 (1) 和 1.577 × 104 M-1 (2)、0.38 × 104 M-1 (1) 和 6.39 × 104 M-1 ( 2) 和 2.1 × 106 M-1 (1) 和 2.0 × 06 M-1 (2),分别用于前三种技术。复合物对三种真菌菌株具有良好的抗真菌活性。荧光光谱和粘度计产生的 Kb 值为 1.871 × 104 M-1 (1) 和 1.577 × 104 M-1 (2)、0.38 × 104 M-1 (1) 和 6.39 × 104 M-1 (2) 和 2.1 ×对于前三种技术,分别为 106 M–1 (1) 和 2.0 × 06 M–1 (2)。复合物对三种真菌菌株具有良好的抗真菌活性。荧光光谱和粘度计产生的 Kb 值为 1.871 × 104 M-1 (1) 和 1.577 × 104 M-1 (2)、0.38 × 104 M-1 (1) 和 6.39 × 104 M-1 (2) 和 2.1 ×对于前三种技术,分别为 106 M–1 (1) 和 2.0 × 06 M–1 (2)。复合物对三种真菌菌株具有良好的抗真菌活性。
更新日期:2020-10-06
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