Synthesis, Characterization, Spectral and Antimicrobial Studies of Some Trivalent Ln(III) Metal Complexes with Ligands Containing ‘N’ and ‘O’ Donor Atoms
作者:Rajesh Kumar Mishra、B.G. Thakur
DOI:10.14233/ajchem.2015.17144
日期:——
Ten new coloured solid complexes of type [ML2X2], Where M=La(III), Pr(III), Nd(III), Sm(III) & Dy(III), ‘L’ = Ligand i.e., N-(3-methyl-thiocarbamyl-5-oxo-2-pyrazolin-4-ylene-N-(4-antipyrine)hydrazine (HATP) and N-(3-methyl-1-thiocarbamyl-5-oxo-2-pyrazolin-4-ylene)-N-(4-benzothiazole)hydrazine (HBTP) and ‘X’=H2O have been synthesized and characterized by their elemental analysis, molar conductance values, magnetic susceptibilities, UV, IR and NMR spectral studies. Elemental analysis confirms 1:2 stoichiometry of the synthesized complexes. Spectral studies confirms that the ligand ‘HATP’ and ‘HBTP’ acts as tetradentate and tridentate, respectively and coordinates to central metal ion by ‘N’ and ‘O’ donor atoms. Complexes are ten and eight coordinated. Further the ligands and synthesized complexes have been screened for their antibacterial activity against some Gram-positive and Gram-negative bacteria.
合成了十种新型有色固体配合物,类型为[ML2X2],其中M=La(III)、Pr(III)、Nd(III)、Sm(III)和Dy(III);‘L’为配体,即N-(3-甲基硫氨基-5-氧基-2-吡唑啉-4-亚基)-N-(4-阿基嘧啶)肼(HATP)和N-(3-甲基-1-硫氨基-5-氧基-2-吡唑啉-4-亚基)-N-(4-苯并噻唑)肼(HBTP);‘X’=H2O。通过元素分析、摩尔电导值、磁化率、紫外、红外和核磁共振光谱研究对其进行了表征。元素分析确认了合成配合物的1:2化学计量比。光谱研究表明,配体‘HATP’和‘HBTP’分别作为四齿和三齿配体,通过‘N’和‘O’供体原子与中心金属离子配位。配合物的配位数分别为十和八。此外,对这些配体和合成的配合物进行了抗菌活性筛选,针对一些革兰阳性和革兰阴性细菌。