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Synthesis, spectroscopic properties and biological activity of new mono organotin(IV) complexes with 5-bromo-2-hydroxybenzaldehyde-4,4-dimethylthiosemicarbazone

机译:新型单有机锡(IV)与5-溴-2-羟基苯甲醛-4,4-二甲基硫代氨基脲的配合物的合成,光谱性质和生物活性

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The organotin(IV) complexes [RSn(L)] (where R?=?Me (2), R?=?n-Bu (3), R?=?Ph (4); H_(2)L (1)?=?5-bromo-2-hydroxybenzaldehyde-4,4-dimethylthiosemicarbazone) have been synthesized by the reaction of organotin(IV) chloride(s) with H_(2)L (1). All the compounds have been characterized by CHN analyses, UV–vis, FT-IR, ~(1)H, ~(13)C and ~(119)Sn NMR spectral studies. The molecular structure of H_(2)L (1) has been confirmed by X-ray crystallography. The infrared spectrum gives confirmation for the compound (H_(2)L) in the thione form, which is supported with the observed bond lengths from the crystal structure. Spectral studies revealed that the dinegative tridentate ligand is bonded to the tin(IV) atom via phenolic-O, azomethine-N and thiolate-S atoms. ~(119)Sn NMR data in DMSO-d _(6) suggested penta-coordinated Sn(IV) atom in solutions for all complexes (2–4). The compound, H_(2)L (1) crystallizes into a monoclinic lattice with the space group P2 _(1 )/c , Z?=?4, V?=?1,191.75(8)?~(3). The compounds were also tested for their antiproliferative activity against human colon cancer cell line (HCT 116) and displayed strong cytotoxic activities.
机译:有机锡(IV)配合物[RSn(L)](其中R?=?Me(2),R?=?n-Bu(3),R?=?Ph(4); H_(2)L(1通过有机氯化锡(Ⅳ)与H_(2)L(1)的反应合成了α=β5-溴5-羟基-2-羟基苯甲醛-4,4-二甲基硫代半脲。所有化合物均已通过CHN分析,UV-vis,FT-IR,〜(1)H,〜(13)C和〜(119)Sn NMR光谱学进行了表征。 H_(2)L(1)的分子结构已通过X射线晶体学证实。红外光谱证实了硫酮形式的化合物(H_(2)L),其由晶体结构中观察到的键长支撑。光谱研究表明负三齿配体通过酚-O,偶氮甲碱-N和硫醇盐-S原子键合到锡(IV)原子上。 DMSO-d _(6)中的〜(119)Sn NMR数据表明所有配合物在溶液中均具有五配位的Sn(IV)原子(2-4)。化合物H_(2)L(1)结晶为空间群为 P2 _( 1) / c的单斜晶格,Zα=?4,V?=?1,191.75(8) )?〜(3)。还测试了这些化合物对人结肠癌细胞系(HCT 116)的抗增殖活性,并显示出强大的细胞毒性活性。

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