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Some boron compounds of semicarbazones: Antimicrobial activity and precursor for the sol-gel transformation to nanosized boron oxide

Abstract

Some new boron derivatives of the type [(4-C6H4R)C(CH3)NN:C(NH2)OB(OC6H4O)] were synthesized by the reaction of OC6H4OBOPri and LH [LH = (OH)C(NH2)NN:C(CH3)(4-C6H4R)], [where R= H (L1H); CH3(L2H); OCH3(L3H); Cl (L4H); Br (L5H)] in 1:1 molar ratio in refluxing toluene. All these newly synthesized complexes have been characterized by elemental analyses and their probable structure has been proposed on the basis of IR, 1H, 13C and 11B spectral data and EI mass spectrometry. Antimicrobial activities of semicarbazone ligands and their boron derivatives have been tested against E. coli and P. aeruginosa bacteria and A. niger and P. peniculosum fungi. B(OPri)3 and boron semicarbazone derivative, [(4-C6H4Cl)C(CH3)NN:C(NH2)OB(OC6H4O)] have been used as a precursor to synthesize nanosized cubic B2O3 (A and B) and orthorhombic B7O (C) respectively by sol-gel transformation. The average particle sizes of the B2O3 (A) and (B) and B7O (C) are ~ 9.41 nm, ~ 14.87 and ~ 16.81 nm, respectively.

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Publication details

The article was received on 08 Feb 2018, accepted on 07 May 2018 and first published on 08 May 2018


Article type: Paper
DOI: 10.1039/C8NJ00683K
Citation: New J. Chem., 2018, Accepted Manuscript
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    Some boron compounds of semicarbazones: Antimicrobial activity and precursor for the sol-gel transformation to nanosized boron oxide

    J. Bhomia, J. Sharma, R. Sharma and Y. P. Singh, New J. Chem., 2018, Accepted Manuscript , DOI: 10.1039/C8NJ00683K

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