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New copper(II) and zinc(II) complexes based on azo Schiff base ligand: Synthesis, crystal structure, photoisomerization study and antibacterial activity
Author(s) -
Slassi Siham,
ElGhayoury Abdelkrim,
Aarjane Mohammed,
Yamni Khalid,
Amine Amina
Publication year - 2020
Publication title -
applied organometallic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.53
H-Index - 71
eISSN - 1099-0739
pISSN - 0268-2605
DOI - 10.1002/aoc.5503
Subject(s) - chemistry , schiff base , ligand (biochemistry) , deprotonation , zinc , copper , denticity , crystal structure , polymer chemistry , crystallography , stereochemistry , medicinal chemistry , photochemistry , organic chemistry , ion , biochemistry , receptor
Newly synthesized mononuclear copper(II) and zinc(II) complexes containing an azo Schiff base ligand (L), prepared by condensation of 2‐hydroxy‐5‐( o ‐tolyldiazenyl)benzaldehyde and propylamine, were obtained and then characterized using infrared and NMR spectroscopies, mass spectrometry and X‐ray diffraction. Ligand L behaves as a bidentate chelate by coordinating through deprotonated phenolic oxygen and azomethine nitrogen. The copper and zinc complexes crystallize in triclinic and orthorhombic systems, respectively, with space groups P − 1 and Pca2 1 . In these complexes, the Cu(II) ion is in a square planar geometry while the Zn(II) ion is in a distorted tetrahedral environment. The photochemical behaviors of ligand L, [Cu(L) 2 ] and [Zn(L) 2 ] were investigated. The azo group in L underwent reversible trans – cis isomerization under UV and visible irradiation. This process was inhibited for the complexes. In addition, ligand L and its copper and zinc complexes were assessed for their in vitro antibacterial activities against four pathogenic strains.