Spectral, NLO and antimicrobial studies of Co(II), Ni(II) and Cu(II) complexes of Schiff base ligands of 2-amino-6-nitrobenzothiazole

Main Article Content

Chinnaraj Kanagavalli
Murugesan Sankarganesh
Jeyaraj Dhaveethu Raja
Manivannan Kalanithi

Abstract

Novel series of Co(II), Ni(II) and Cu(II) transition metal complexes were synthesized from the Schiff base ligands HL1HL4 derived from 2-amino-6-nitrobenzothiazole with various aromatic aldehydes, i.e., 4-methylbenz­alde­hyde, 4-ethylbenzaldehyde, 2-hydroxybenzaldehyde and 4-hydroxybenz­al­dehyde, respectively. The ligands HL1HL4 and their metal (II) complexes were characterized by atomic absorption spectroscopy (AAS), magnetic susceptibility and molar conductance measurements, and UV–Vis, FT-IR and NMR spectroscopic tech­niques. The spectroscopic studies revealed that the complexes of HL1HL3 coor­dinated in an octahedral environment and L4 in square planar/tetrahedral geo­metry. The ligands HL1HL4 and their metal(II) complexes were screened for their antimicrobial activities against Staphylococcus aureus, Escherichia coli, Pseudomonas aeruginosa and Candida albicans. The results suggest that the complexes of HL4 possess greater inhibition activity towards C. albicans. The nonlinear optics (NLO) activities of ligands HL1HL4 were determined. The obtained results showed that ligands HL1 and HL2 have greater second harmonic generation (SHG) efficiency than HL3and HL4.

Article Details

How to Cite
[1]
C. Kanagavalli, M. Sankarganesh, J. Dhaveethu Raja, and M. Kalanithi, “Spectral, NLO and antimicrobial studies of Co(II), Ni(II) and Cu(II) complexes of Schiff base ligands of 2-amino-6-nitrobenzothiazole”, J. Serb. Chem. Soc., vol. 84, no. 3, pp. 267-275, Apr. 2019.
Section
Inorganic Chemistry
Author Biographies

Chinnaraj Kanagavalli, Department of Chemistry, Theni college of Arts and Science, Veerapandi, Theni-625534, Tamil Nadu

Department of Chemistry

Murugesan Sankarganesh, Chemistry Research Centre, Mohamed Sathak Engineering College, Kilakarai, Ramanathapuram-623806, Tamil Nadu

Chemistry Research Centre

Jeyaraj Dhaveethu Raja, Chemistry Research Centre, Mohamed Sathak Engineering College, Kilakarai, Ramanathapuram-623806, Tamil Nadu

Chemistry Research Centre

Manivannan Kalanithi, PG and Research Centre of Chemistry, Jayaraj Annapackium College for Women, Periyakulam, Theni-62560, Tamil Nadu

PG and Research Centre of Chemistry

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