Synthesis, Spectral Studies, and Antimicrobial Evaluation of Antimony(III) Tri[3(2'-hydroxyphenyl)-5-(4-substituted Aryl]pyrazolinate

Authors: Solanki, Jeeven¹; Tripathi, U. N.²; Bhardwaj, Arpan³; Jena, Vinod⁴

Source: Phosphorus, Sulfur, and Silicon and the Related Elements, Volume 184, Number 8, August 2009 , pp. 2169-2178(10)

Publisher: Taylor and Francis Ltd

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Abstract:

The synthesis and structure of antimony(III) tripyrazolinates complexes with bidentate N,O, Schiff base pyrazoline ligands are reported. Four new coordination complexes incorporating antimony have been synthesized and characterized by spectroscopic methods (IR, 1H NMR, 13C NMR), molecular weight, and elemental analysis. Novel complexes of the type Sb(C15H12N2OX)3 have been synthesized in dry benzene by the reaction of SbCl3 and the sodium salt of pyrazoline, NaC15H12N2OX, [where X = H (1), CH3 (2), OCH3 (3), and Cl (4)] in 1:3 molar ratio. The 3(2' -hydroxyphenyl)-5-(4-substituted aryl) pyrazoline behaves as a bidentate ligand and coordinates to antimony through oxygen and nitrogen atoms, leading to distorted pentagonal bipyramidal structure. The antimicrobial properties of antimony are greatly enhanced when antimony is combined with this pyrazoline ligand. Compounds were screened against different bacteria (B. licheniformis and K. pneumonia) and fungi (Aspergillus niger and Penicillium notatum), and show potential activities.

Keywords: Antimony trichloride; bacteria; fungus; pyrazolinates and antimicrobial activity

Document Type: Research article

DOI: http://dx.doi.org/10.1080/10426500802429799

Affiliations: 1: School of Studies in Chemistry, Vikram University, Ujjain, India 2: School of Studies in Chemistry, DDU University, Gorakhpur, India 3: Madhav Science Collage, Vikram Universities, Ujjain, India 4: School of Studies in Chemistry, Pt. Ravishankar Shukla University, Raipur, India

Publication date: 2009-08-01