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E-Journal of Chemistry
Volume 6 (2009), Issue 1, Pages 281-288

Synthesis, Characterization and Chelating Properties of Benzimidazole-Salicylic Acid Combined Molecule

Kamlesh V. Patel and Arun Singh

Department of Chemistry, Govt.Geetanjali P.G. Girls College, Bhopal, India

Received 22 May 2008; Accepted 20 July 2008

Copyright © 2009 Hindawi Publishing Corporation. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.


Aminomethylation (i.e. Mannich reaction) of benzimidazole was carried out by treating benzimidalzole with formaldehyde and 4-aminosalicylic acid. The resultant compound was designated as 1-(4-carboxy-3-hydroxyphenyl aminomethyl) benzimidazole (BI-SA). The transition metal complexes of Cu2+, Co2+, Ni2+, Mn2+, Zn2+ and Fe3+ of BI-SA have been prepared and characterized by elemental analyses, spectral studies, magnetic moment determination, molar conductivity measurement and microbicidal activity.