Synthesis, Spectral Characterization, and Fungicidal Activity of Transition Metal Complexes With Benzimidazolyl-2-hydrazones of Glyoxal, Diacetyl, and Benzil

Abstract

A series of complexes of the type [ML₂].nH₂O, where L = 2- (benzimidazolyl-2′-amino) imino ethanone (HBAIE), 2-(benzi midazolyl–2′-amino) imino-1,2-dimethyl ethanone (HBAIME), 2-(benzimidazolyl-2′-amino) imino-1,2-diphenyl ethanone (HBAIPE), M = Cu(II), Co(II), Ni(II), and Zn(II), have been synthesized and characterized. The results are in consistent with tridentate chelation of ligand with azo nitrogen, ring nitrogen, and oxygen atom of glyoxal, diacetyl, and benzil. The fungi toxicity of the ligands and their complexes against some fungal pathogen has been studied.

Keywords:

• benzil
• benzimidazolyl-2-hydrazones
• diacetyl
• glyoxal
• transition metal complexes

Acknowledgments

The authors gratefully acknowledge the services rendered by Director, Regional Sophisticated Instrumentation Center, I. I. T., Madras, for recording the spectra.