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

Chinnaraj Kanagavalli; Murugesan Sankarganesh; Jeyaraj Dhaveethu Raja; Manivannan Kalanithi

doi:10.2298/JSC180521101K

PDF (375 kB) Supplementary Material (184 kB)

Published: Apr 2, 2019

DOI: https://doi.org/10.2298/JSC180521101K

Keywords:

aldehydes metal(II) complexes spectroscopic AAS biological activity

Chinnaraj Kanagavalli

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

Murugesan Sankarganesh

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

Jeyaraj Dhaveethu Raja

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

Manivannan Kalanithi

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

Abstract

Novel series of Co(II), Ni(II) and Cu(II) transition metal complexes were synthesized from the Schiff base ligands HL1–HL4 derived from 2-amino-6-nitrobenzothiazole with various aromatic aldehydes, i.e., 4-methylbenzaldehyde, 4-ethylbenzaldehyde, 2-hydroxybenzaldehyde and 4-hydroxybenzaldehyde, respectively. The ligands HL1–HL4 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 HL1–HL3 coordinated in an octahedral environment and L4 in square planar/tetrahedral geometry. The ligands HL1–HL4 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 HL1–HL4 were determined. The obtained results showed that ligands HL1 and HL2 have greater second harmonic generation (SHG) efficiency than HL3and HL4.

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[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.

Issue

Vol. 84 No. 3 (2019)

Section

Inorganic Chemistry

Authors retain copyright and grant the journal right of first publication with the work simultaneously licensed under a Creative Commons Attribution license 4.0 that allows others to share the work with an acknowledgement of the work's authorship and initial publication in this journal.

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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