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首页> 外文期刊>Journal of the Indian Chemical Society >Synthesis, reactions, physicochemical characterization and biological studies of titanium(IV) Schiff base complexes
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Synthesis, reactions, physicochemical characterization and biological studies of titanium(IV) Schiff base complexes

机译:钛(IV)席夫碱配合物的合成,反应,理化性质和生物学研究

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摘要

Some titanium(IV) complexes of the type [Ti(Cl)_(4-n)(L)_n] (1-2), [where n = 1 or 2, L = Schiff bases; salicylidene-2-nicthy-l-aminobenzenc (LH)] have been synthesized by the reactions of titanium(IV) chloride with sodium salts of Schiff bases in 1 : 1 and 1 : 2 molar ratio(s) in MeOH-C6H6 respectively. Interaction of complex (1) with sodium salts of saIicylidene-2-aminopyridine [Na(L')], and tetraisopropoxyaluminate in equimolar ratio produces mixed ligand complex of the type; [(CI)2(L)Ti(L')] (3) and bimetallic complex [(Cl)2Ti(L){Al(OPr~i)4}] (4) respectively. Reaction of complex (3) with sodium isopropoxide yields the complex [(OPr')2(L)Ti(L')] (5) in THF-C6H6 mixture. These complexes have been characterised by melting points, elemental analysis, and spectral [IR, NMR (~1H, ~(13)C), MS and Powder XRD] studies. Thermogravimetric analysis (TGA) curve shows multi-step decomposition with the formation of metal oxide residue. SEM analysis provides the morphology of the complexes. Antibacterial activity showing that the titanium(iv) complexes were found to be more potent than Schiff bases against some selected bacterial strains.
机译:某些类型为[Ti(Cl)_(4-n)(L)_n](1-2)的钛(IV)配合物,其中[n = 1或2,L = Schiff碱;通过氯化钛(IV)与席夫碱的钠盐在MeOH-C6H6中的摩尔比分别为1:1和1:2的反应合成了水杨基-2-硝基-1-氨基苯甲酸酯(LH)。配合物(1)与水杨基-2-氨基吡啶[Na(L')]的钠盐和四异丙氧基铝酸盐等摩尔比的相互作用产生了这种类型的混合配体配合物; [(CI)2(L)Ti(L')](3)和双金属配合物[(Cl)2 Ti(L){Al(OPr〜i)4}](4)。配合物(3)与异丙醇钠的反应产生了在THF-C6H6混合物中的配合物[(OPr')2(L)Ti(L')](5)。这些配合物的特征在于熔点,元素分析和光谱[IR,NMR(〜1H,〜(13)C),MS和粉末XRD]研究。热重分析(TGA)曲线显示了多步分解并形成了金属氧化物残留物。 SEM分析提供了复合物的形态。抗菌活性表明,钛(iv)配合物对某些选定的细菌菌株比席夫碱更有效。

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