Nematicidal Activity Studies of Cu2+and Zn2+Complexes with Some Aldimine Ligands Against MeloidogyneArenaria: A Root Knot Nematode of Arachis Hypogea

Iorungwa, Moses Saviour; Wuana, Raymond Ahulle; Ugama, Anthony George; Amua, Qrisstuberg Msughter; Tivkaa, Joseph T; Iorungwa, Patience Dooshima; Surma, Nguamo

doi:10.22034/ijnc.2020.137463.1132

Nematicidal Activity Studies of Cu2+and Zn2+Complexes with Some Aldimine Ligands Against MeloidogyneArenaria: A Root Knot Nematode of Arachis Hypogea

Document Type : Research Paper

Authors

Moses Saviour Iorungwa ¹

Raymond Ahulle Wuana ¹

Anthony George Ugama ¹

Qrisstuberg Msughter Amua ¹

Joseph T Tivkaa ²

Patience Dooshima Iorungwa ¹

Nguamo Surma ¹

¹ Inorganic /Physical Chemistry Research Group, Federal University of Agriculture, Makurdi, P.M.B. 2373 Benue State , 970001 - Nigeria

² Department of Science laboratory Technology, Benue State Polytechnic, Ugbokolo - Nigeria

https://doi.org/10.22034/ijnc.2020.137463.1132

Abstract

Two Schiff base donor ligands (aldimines) were used to prepare four transition metal complexes of Cu(II) and Zn(II) by treating 2-nitroaniline and salicylaldehyde to form the Schiff base ligand 2[(2-nitrophenylimino) methyl] phenol (L1) and 4-nitroaniline and salicylaldehyde to form 2-[(4-nitrophenylimino)]methyl]phenol (the L2 counterpart). The processes were accomplished using a microwave oven assisted reaction regulated at 1000C for 30 min. Characterization was carried out on the basis of physical properties elemental analysis, FTIR, 1H-NMR and 13C-NMR spectroscopy, electronic spectral and mole ratio method. Results from the FTIR spectra of the ligands and corresponding complexes showed that the ligands L1 and L2 displayed a bidentate character with coordination via the nitrogen and oxygen atoms. The 1H-NMR and 13C-NMR data of L1 and L‌2 confirmed the formation of the complexes of Cu(II) and Zn(II) showing that the probable coordination geometries of Cu(II) and Zn(II) are octahedral. The complexes were found to be non electrolytes in alcohol. The nematicidal activity studies implied that the ligands and their metal complexes showed promising nematicidal ability with the metal complexes showing comparatively higher inhibiting ability than the free ligands against the root knot nematode Meloidogyne arenaria present in the crop Arachis Hypogea.

Keywords

Characterization

nematicidal activiy

Aldimines

Meloidogyne arenaria

Arachis Hypogea

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