Spectroscopic and biological studies of new mononuclear metal complexes of a bidentate NN and NO hydrazone-oxime ligand derived from egonol
Küçük Resim Yok
Tarih
2015
Dergi Başlığı
Dergi ISSN
Cilt Başlığı
Yayıncı
Pergamon-Elsevier Science Ltd
Erişim Hakkı
info:eu-repo/semantics/closedAccess
Özet
A novel ligand, vicinal dioxime ligand (egonol-hydrazone glyoxime) (LH2) was synthesized and characterized using H-1 NMR,C-13 NMR, MS, AAS, infrared spectroscopy, and magnetic susceptibility measurements. Mononuclear nickel (II), copper (II) and cobalt (II) complexes with a metal:ligand ratio of 1:2 for LH2 were also synthesized. Zn(II) forms complex [Zn(LH)Cl-2] with a metal to ligand ratio of 1:1. IR spectrum shows that the ligand act in a bidentate manner and coordinates N-4 donor groups of the ligands to Ni-II, Cu-II, Co-II and Zn-II ions. The detection of H-bonding (O-H...O) in the [M(LH)(2)] metal complexes by IR spectra supported the square-planar MN4 coordination of Ni(II), Cu(II) and Co(II) complexes. The antimicrobial activities of compounds LH2 and their Ni(II), Cu(II), Co(II) and Zn(II) complexes were evaluated using the disc diffusion method against 16 bacteria and 5 yeasts. The minimal inhibitory concentrations (MICs) against all the bacteria and yeasts were also determined. Among the attempted test compounds, it is showed that all the compounds (L, LH2, [Ni(LH)2], [Cu(LH)(2)], [Co(LH)(2)(H2O)(2)], [Zn(LH)Cl-2]) were effective against used test microorganisms. (C) 2014 Elsevier B.V. All rights reserved.
Açıklama
Anahtar Kelimeler
Styrax officinalis, vic-Dioxime, Hydrazone, Egonol, Transition metal complex, Antimicrobial activity
Kaynak
Spectrochimica Acta Part A-Molecular and Biomolecular Spectroscopy
WoS Q Değeri
Q2
Scopus Q Değeri
Q2
Cilt
141
