Synthesis, Characterization and Biological Activity of Binuclear Cu(II) Complexes with Unsymmetrical Brighted Tetradentate Schiff Bases

Yıl 2019, Cilt: 7 , 155 - 163, 24.11.2019

Moza M. Al-jıboury Khansaa Sh. Al-nama

Öz

Unsymmetrically brighted tetradentate Schiff bases H2L1= [1-(E)-((3-((E)-2hydroxybenzlidene) amino) phenyl)imino) methyl), naphthalene-2-ol], H2l2= [2-((E)-1-((3(((E) 2hydroxybenzlidene) amino)phenyl) imino) phenyl) imino)ethyl)phenol], H2L3= [2-((E)-1-((3(((E) 2hydroxybenzlidene) amino)phenyl)methyl)-5methoxyphenol] Which derived from m-phenylenediamine with salicyaldehyde and 2-hydroxynaphthaldehyde or 2-hydroxyacetophenone or 2-hydroxy-4methoxybenzophenone and their complexes of the type [ Cu2Ln2], where n=1,2,3 have been synthesized. Adduct complexes of the type [Cu2Ln2 (py)4] were also prepared in (1:4) (complex : py) molar ratio. The complexes and adducts were characterized by elemental analysis (C.H.N), metal content, (IR, UV-Vis, 1H-NMR) spectroscopy, conductivity and magnetic measurements. The resulted data suggested that the Schiff bases containing ONNO donor atoms acts as dibasic tetradendetate ligands through coordinated with Cu(II). Conductivity data in DMSO solution showed that all complexes are non-electrolyte. Magnetic moment and electronic spectra data indicat that the complexes have either tetrahedral or octahedral geometry. The ligands and their complexes were screened for antibacterial activity against Bacillus and Morganella Morgani. The ligands and their complexes showed some biological activities.

Anahtar Kelimeler

Antibacterial activity, M-phenylenediamine, Schiff base, Unsymmetrical tetradentate

Kaynakça

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