Heteroleptic complexes of Zn(II) based on 1-(5-bromo-2-hydroxybenzylidene)-4-phenylthiosemicarbazide: Synthesis, structural characterization, theoretical studies and antibacterial activity
作者:Mohammad Azarkish、Alireza Akbari、Tahereh Sedaghat、Jim Simpson
DOI:10.1016/j.molstruc.2016.12.080
日期:2017.4
Abstract Four new ternary complexes, [ZnL (2,2′-bipy)] ( 1 ), Zn 2 L 2 (4,4′-bipy)] ( 2 ), [ZnL(Imd)]·H 2 O ( 3 ) and [ZnL 3 (MeImd)] ( 4 ), have been synthesized from the reaction of Zn(II) acetate with 1-(5-bromo-2-hydroxybenzylidene)-4-phenylthiosemicarbazide (H 2 L) in the presence of a heterocyclic base, 2,2′-bipyridine, 4,4′-bipyridine, imidazole or 2-methylimidazole, as an auxiliary ligand. The complexes
摘要 四种新的三元配合物,[ZnL (2,2'-bipy)] ( 1 ), Zn 2 L 2 (4,4'-bipy)] ( 2 ), [ZnL(Imd)]·H 2 O ( 3 ) ) 和 [ZnL 3 (MeImd)] ( 4 ),是由醋酸锌与 1-(5-bromo-2-hydroxybenzylidene)-4-phenylthiosemicarbazide (H 2 L) 反应合成的杂环碱、2,2'-联吡啶、4,4'-联吡啶、咪唑或2-甲基咪唑作为辅助配体。已通过元素分析和 FT-IR、UV-Vis 和 1 HNMR 光谱研究了配合物。这些数据表明缩氨基硫脲作为三齿双阴离子配体并通过硫醇基团、亚胺氮和酚氧进行配位。配位球由二级配体的氮原子完成。1 的结构也被 X 射线晶体学证实,并显示为一个五坐标复合物,在方锥体和三角双锥体之间具有配位几何。密度泛函理论 (DFT) 计算包括几何优化、振动频率和电子吸收,已使用