Synthesis, characterization, biological studies, and molecular modeling of mixed ligand bivalent metal complexes of Schiff bases based on $N$-aminopyrimidine-2-one/2-thione
作者:Hatice Gamze SOĞUKÖMEROĞULLARI、Tuğba TAŞKIN TOK、Feyza YILMAZ、İsmet BERBER、Mehmet SÖNMEZ
DOI:10.3906/kim-1412-81
日期:——
New mixed Schiff bases, Cu(II), Co(II), Ni(II), and Mn(II) complexes, were synthesized derived from 5-chloro-2-hydroxyacethophenone and 1-amino-5-benzoyl-4-phenyl-1H-pyrimidine-2-one/thione. These complexes were characterized by elemental analysis, magnetic measurements, molar conductivity, IR, electronic, NMR, and mass spectral studies. All the complexes showed nonelectrolytic behavior. Moreover, the newly synthesized mixed ligand complexes were evaluated for their in vitro antimicrobial efficiency against bacteria and yeast. The compound named Co(L$_1}$L) had good antifungal activity against Candida species, but no profound antibacterial effect against bacterial strains. In addition, the ground state geometries of the complexes were optimized using a semi-empirical method at PM6 level, which is a suitable and effective basis set for organometallic and large structures to obtain information about their 3D geometries and electronic structures.
由 5-氯-2-羟基苯乙酮和 1-氨基-5-苯甲酰基-4-苯基-1H-嘧啶-2-酮/硫酮合成了新的混合希夫碱、铜(II)、钴(II)、镍(II)和锰(II)配合物。通过元素分析、磁性测量、摩尔电导率、红外光谱、电子显微镜、核磁共振和质谱研究对这些复合物进行了表征。所有配合物均表现出非电解行为。此外,还对新合成的混合配体复合物进行了体外抗细菌和酵母菌效率的评估。被命名为 Co(L$_1}$L) 的化合物对白色念珠菌具有良好的抗真菌活性,但对细菌菌株没有明显的抗菌效果。此外,研究人员还采用 PM6 水平的半经验方法优化了这些复合物的基态几何结构。PM6 水平是有机金属和大型结构的一个合适而有效的基集,可以获得它们的三维几何结构和电子结构信息。