Synthesis and Characterization of Organotin(IV) Complexes Derivatives of Methyl- and Nitro- Substituted Monocarboxylic Acid: Preliminary in vitro Antibacterial Screening Activity
作者:Yip-Foo Win、Chen-Shang Choong、Sie-Tiong Ha、Siang-Guan Teoh、Naser Eltaher Eltayeb
DOI:10.14233/ajchem.2013.13292
日期:——
Organotin(IV) carboxylate complexes derivatives of 3-methyl-4-nitrobenzoic acid (3-CH3-4-NO2-C6H3COOH) and 4-methyl-3-nitrobenzoic acid (4-CH3-3-NO2-C6H3COOH) have been successfully synthesized. Two dibutyltin(IV) complexes with the general formulae [X-CH3-Y-NO2-C6H3COO(C4H9)2Sn]2O}2 (X = meta, Y = para 1; X = para, Y = meta 3) and another two triphenyltin(IV) complexes with the general formulae X-CH3-Y-NO2-C6H3COO(C6H5)3Sn·CH3OH (X = meta, Y = para 2; X = para, Y = meta 4) were successfully synthesized. The acids and complexes 1-4 obtained were characterized quantitatively and qualitatively. Results of the infrared and NMR spectroscopy on the acids and complexes showed that the coordination took place via oxygen atoms from the carboxylate anions. Based on the spectroscopy studies indicated that one methanol molecule also take part in the coordination to tin(IV) atoms moiety in complexes 2 and 4 resulting the tin(IV) atoms exhibited five coordination. From the preliminary in vitro antibacterial screening activity, triphenyltin(IV) complexes (2 and 4) showed better activity compared to diorganotin(IV) complexes (1 and 3).
已经成功合成了3-甲基-4-硝基苯甲酸(3-CH3-4-NO2-C6H3COOH)和4-甲基-3-硝基苯甲酸(4-CH3-3-NO2-C6H3COOH)的有机锡(IV)羧酸盐复合物衍生物。合成了两个二丁基锡(IV)复合物,通式为[X-CH3-Y-NO2-C6H3COO(C4H9)2Sn]2O}2(X = 间位,Y = 对位 1;X = 对位,Y = 间位 3),以及另外两个三苯基锡(IV)复合物,通式为X-CH3-Y-NO2-C6H3COO(C6H5)3Sn·CH3OH(X = 间位,Y = 对位 2;X = 对位,Y = 间位 4)。合成的酸和复合物1-4进行了定量和定性表征。红外光谱和NMR光谱的结果表明,配位是通过羧酸阴离子的氧原子进行的。基于光谱研究,表明一个甲醇分子也参与了复合物2和4中与锡(IV)原子的配位,导致锡(IV)原子表现出五配位。初步的体外抗菌筛选活动显示,三苯基锡(IV)复合物(2和4)相比于二有机锡(IV)复合物(1和3)表现出更好的活性。