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首页> 外文期刊>Journal of the Indian Chemical Society >A study on the mononuclear bivalent manganese and copper complexes of twelve membered hexaaza [N6] macrocyclic ligand : Synthesis, spectral and in vitro antifungal screening
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A study on the mononuclear bivalent manganese and copper complexes of twelve membered hexaaza [N6] macrocyclic ligand : Synthesis, spectral and in vitro antifungal screening

机译：十二元六氮杂[N6]大环配体的单核二价锰和铜配合物的研究：合成，光谱和体外抗真菌筛选

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摘要

New manganese(II) and copper(II) complexes of 12-membered macrocyclic Schiff base ligand containing thiosemicarbazone moiety have been prepared having general composition [MLX2] where M = Mn~(II) or Cu~(II), L = 3,4,9,10- tetra-2-furanyl-1,2,5,6,8,11-hexaazacyclododeca-7,12-dithione-2,4,8,10-tetraene and X = Cl~-, NO_3~- and NCS~-. The complexes have been characterized by elemental analysis, molar conductance, magnetic susceptibility measurements and spectral (IR, electronic, EPR and mass) techniques. The IR spectra of complexes suggested that ligand is coordinated to the metal ion through imine nitrogen atoms. On the basis of spectral studies, an octahedral and tetragonal geometry has been assigned for Mn~(II) and Cu~(II) complexes respectively. EPR spectra of polycrystalline Mn~(II) complexes gave an isotropic signal with g value centered around free electron g value. EPR spectra of Mn~(II) complexes in DMSO showed hyper-fine splitting containing six lines whereas EPR spectra of polycrystalline Cu~(II) complexes showed anisotropic signal. Conductivity measurements supported the non electrolytic nature of the complexes. Magnetic moment data suggested the paramagnetic and high spin nature of the complexes. AH the complexes have also been tested in vitro against a number of pathogenic fungi. Results indicated that the complexes exhibited good antifungal activity. Thermal analysis of reported complexes suggested no weight loss up to 120-150 °C and indicated the absence of water molecule either in or outside the coordination sphere.
机译：已制备出具有硫半缩氨基脲部分的十二元大环席夫碱配体的新锰（II）和铜（II）配合物，其通式为[MLX2]，其中M = Mn〜（II）或Cu〜（II），L = 3， 4,9,10-四-2-呋喃基-1,2,5,6,8,11-六氮杂环十二烷基-7,12-二硫酮-2,4,8,10-四烯和X = Cl〜-，NO_3〜 -和NCS〜-。通过元素分析，摩尔电导，磁化率测量和光谱（IR，电子，EPR和质量）技术对络合物进行了表征。配合物的红外光谱表明，配体通过亚胺氮原子与金属离子配位。在光谱研究的基础上，分别为Mn〜（II）和Cu〜（II）配合物指定了八面体和四边形的几何形状。多晶Mn〜（II）配合物的EPR谱图给出了各向同性信号，其中g值以自由电子g值为中心。 DMSO中Mn〜（II）配合物的EPR谱图显示超细分裂，包含6条谱线，而Cu〜（II）多晶配合物的EPR谱图显示各向异性信号。电导率测量结果支持了配合物的非电解性质。磁矩数据表明了配合物的顺磁性和高自旋性质。所有复合物也已在体外针对多种致病真菌进行了测试。结果表明该复合物表现出良好的抗真菌活性。对报道的配合物进行的热分析表明，在120-150°C的温度范围内都没有失重，并且表明在配位体内或配位外都没有水分子。

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