Synthesis, Physicochemical, and Antimicrobial Screening Studies of Complexes of Co(II), Ni(II), Cu(II), and Zn(II) with 18-membered Schiff Base Octaazamacrocyclic Ligand
作者:Tahir Ali Khan、Sultana Naseem、Rafat Hajra、Mohammad Shakir
DOI:10.1080/15533174.2010.522650
日期:2010.11.30
A [2 + 2] condensation reaction between 1,8-diaminonaph-thalene and N,N'-diacetylhydrazine in 1:1 molar ratio in methanol resulted in a novel Schiff base macrocyclic ligand, (L): 7,9:16,18-dinaphthyl-1,3,4,6,10,12,13,15-octaazacyclooctadecane-1,5,10,14-tetraene. Metal complexes have been synthesized by the reaction of L with the corresponding metal salts. The results of elemental analyses, ESI-mass, and Job's method ascertain their stoichiometry while the spectral data obtained from 1H and 13C NMR, and IR confirmed their bonding features. However, the stereochemistry was inferred from the UV-visible, EPR, and magnetic moment studies. The ligand and its complexes were screened in vitro against gram positive bacteria, gram negative bacteria, and fungi.