Synthesis, structural characterization and antibacterial studies of trisubstituted guanidines and their copper(II) complexes
作者:Muhammad Said、Jamil Ahmad、Wajid Rehman、Amin Badshah、Hizbullah Khan、Momin Khan、Fazal Rahim、Denis M. Spasyuk
DOI:10.1016/j.ica.2015.05.012
日期:2015.8
A series of novel trisubstituted guanidines of general formula C4H9CONHC(NHR1)NR2 (where R-1 = 2-methoxyphenyl (1-4) and phenyl (5), R-2 = 2-methoxyphenyl (1), phenyl (2), 2-tolyl (3), 2-chlorophenyl (4) and 2,3-dimethylphenyl (5), and their copper(II) complexes of general formula (C4H9CONHC(NR1)NR2)(2)Cu were synthesized in good yield. The synthesized guanidines and their copper(II) complexes were characterized by using elemental analysis, FT-IR, NMR (H-1, C-13), and magnetic susceptibility measurements. Compounds 2, 3 and 5a were also characterized by single crystal X-ray diffraction analysis (XRD). Spectroscopic studies confirmed the bidentate coordination of ligands with copper center through oxygen and nitrogen atoms. All the synthesized compounds were tested against various bacterial strains, which showed that 1a and 4a exhibit good bactericidal activity. (C) 2015 Elsevier B.V. All rights reserved.