M(III) complexes with Cr, Mn and Fe with Schiff base derived from 2-amino-4-ethyl-5-hydroxy benzaldehyde and oxocarbohydrazide were synthesized and characterized by several techniques using elemental analysis (C, H, N), molar conductance measurements, magnetic measurements, electronic, mass and IR spectral studies. On the bases of these studies, a five coordinated square pyramidal geometry for all these complexes has been proposed and found to be potential antimicrobial agent. The Schiff base ligand and complexes were also tested for their antimicrobial activity (against the bacteriaEscherichia coli, Staphylococcus aureus, Pseudomonas aeruginosaandBacillus megateriumand the fungiKluyveromyces fragilis, Rhodotorula rubra, Candida albicansandTrichoderma reesei) to assess their inhibiting potential. An attempt is also made to correlate the antimicrobial activity with geometry of the complexes. All complexes were found to be less active against the pathogensE.coli, S.aureusandP.aeruginosa. Cr(III) complex showed the best antimicrobial activity, but ligand alone was found to be active against the fungusT.reesei.
使用2-氨基-4-乙基-5-羟基苯甲醛和氧代卡巴肼衍生的席夫碱合成了Cr、Mn和Fe的M(III)配合物,并通过元素分析(C,H,N)、摩尔电导率测量、磁性测量、电子、质谱和红外光谱研究等多种技术进行了表征。基于这些研究,提出了这些配合物的五配位方锥几何结构,并发现其具有潜在的抗微生物活性。还测试了席夫碱配体和配合物对细菌(大肠杆菌、金黄色葡萄球菌、铜绿假单胞菌和巨大芽孢杆菌)和真菌(脆性克雷伯菌、红色酵母菌、白色念珠菌和枯草芽孢菌)的抗微生物活性,以评估它们的抑制潜力。还试图将抗微生物活性与配合物的几何形状相关联。所有配合物对病原体E.coli、S.aureus和P.aeruginosa的活性均较低。Cr(III)配合物表现出最佳的抗微生物活性,但仅席夫碱配体对真菌T.reesei具有活性。