Eight different di- and triorganotin(IV) complexes of vanillin-Schiff base of the type R2SnClL and R3SnL [R = Me (1,6), n-Bu (2,7), Ph (3,8), tert-Bu (4), Cy (5) and L = 4-((3,5-dimethylphenylimino)methyl)-2-methoxyphenol] were synthesized. The products were characterized by elemental analysis, FT-IR, 1H, 13C and 119Sn NMR spectroscopy. The ligand 4-((3,5-dimethylphenylimino)methyl)-2-methoxyphenol is also characterized by single crystal X-ray analysis. In the 1H NMR spectra of 1 and 6, the 2 J(119/117Sn-1H) in the Sn-CH3 moiety has 57 and 54 Hz values, respectively, that confirm the formation of four-coordinated Sn species. Moreover, the 13C NMR value for ipso carbon of SnPh is 139 ppm which also confirms the formation of four-coordinated Sn species. The title ligand and its complexes were also screened for their biological activities such as interaction with DNA, enzymatic, antimicrobial, cytotoxic and antioxidant activities. The antimicrobial and cytotoxic activities of triorganotin(IV) derivatives are relatively higher than their corresponding diorganotin(IV) analogues due to their greater lipophilicity and permeability through cell membrane.
合成了八种不同类型的二烷基
锡(IV)和三烷基
锡(IV)
香兰素席夫碱配合物, 包括R2SnClL和R3SnL [R=Me (1,6), n-Bu (2,7), Ph (3,8), tert-Bu (4), Cy (5) 和 L=4-((3,5-二
甲基苯亚
氨基)
甲基)-2-
甲氧基苯酚]。通过元素分析、FT-IR、1H、13C和119Sn NMR等手段对产物进行了表征。
配体4-((3,5-二
甲基苯亚
氨基)
甲基)-2-
甲氧基苯酚还通过单晶X射线分析进行了表征。在1和6的1H NMR光谱中, Sn-
CH3基团的2 J(119/117Sn-1H) 值分别为57和54 Hz, 证实形成了四配位的Sn物种。此外, SnPh的ipso
碳的13C NMR值为139 ppm, 同样证实了四配位Sn物种的形成。该
配体及其配合物还进行了
生物活性筛选, 包括与DNA的相互作用、酶促、抗菌、细胞毒性和抗
氧化活性。三烷基
锡(IV)衍
生物的抗菌和细胞毒性活性相对较高, 这是由于它们具有更高的脂溶性和细胞膜通透性。