New Series of Ni(II), Cu(II), Zr(IV), Ag(I), and Cd(II) Complexes of Trimethoprim and Diamine Ligands: Synthesis, Characterization, and Biological Studies

被引:3
作者
Al-Assafe, Amaal Younis [1 ]
Al-Quaba, Rana Abdul Malik Sulaiman [2 ]
机构
[1] Univ Mosul, Dept Chem, Coll Educ Pure Sci, Mosul 41001, Iraq
[2] Univ Mosul, Dept Chem, Coll Sci, Mosul 41001, Iraq
关键词
antibacterial activity; chelating agent; diamine ligand; mixed ligands; trimethoprim;
D O I
10.22146/ijc.89167
中图分类号
O6 [化学];
学科分类号
0703 ;
摘要
New compounds series of [M(TMP)(en)]X center dot nH(2)O and [M(TMP)(PD)]X center dot nH(2)O, where M = Ni2+, Cu2+, Zr4+, Ag+, Cd2+, TMP = trimethoprim, en = ethylenediamine, PD = o-phenylene and X= Cl- or NO3-, were prepared. The compounds were characterized using techniques including melting points, conductance, elemental analysis, FTIR, NMR, and mass spectroscopy. FTIR spectra indicated TMP acted like a bi-dentate ligand, combining via the nitrogen atoms of azomethine and pyrimidine amino groups. Diamine ligands (en or o-PD) are coordinated via two nitrogen atoms. Prepared compounds showed monomeric behavior and adopted a 6-coordinate octahedral geometry based on magnetic susceptibility and UV spectra. Conductivity measurements revealed Zr(IV) compounds were 1:2 conductive, while Ag+ and Cd2+ were 1:1 conductive; Ni2+ and Cu2+ compounds were non-conductive. Antibacterial tests on compounds and ligands against Bacillus subtilis and Staphylococcus aureus demonstrated broad-spectrum antibacterial activity. The mixed metal compounds revealed an observable tendency of antibacterial activity in the order Zr > Cd = Ag > Cu, making Zr(IV) compounds the most biologically active among them against S. aureus (Gram-positive) while the same compounds showed less antibacterial activity against B. subtilis (Gram-negative) than the free ligand.
引用
收藏
页码:812 / 821
页数:10
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