Synthesis and Elucidation of Some Mixed Ligand Complexes of Th(IV) with N-(1-morpholinobenzyl)semicarbazide

M. Viswanathan

Department of Chemistry, Amrita School of Arts and Sciences, Amritapuri Campus, Amrita Vishwa Vidyapeetham University, P.O. Clappana, Kollam-690 525, India

Corresponding author: E-mail:;


Some mixed ligand complexes of Th(IV) with Mannich base N-(1-morpholinobenzyl)semicarbazide (MBS) and various anions like chloride, nitrate, acetate, thiocyanate and perchlorate have been synthesized and characterized. Their probable structures have been elucidated by elemental analysis, determination of molar mass, measurement of molar conductance, spectral and X-ray diffraction studies. The complexes exhibit formulae: [Th(MBS)3X], where X = NO3, Cl, CH3COO, SCN or ClO4. In all these complexes, N-(1-morpholinobenzyl)semicarbazide acts as a bidentate ligand and anions act as unidentate ligands. The antimicrobial activities of ligand and metal chelates against E. coli, S. aureus, K. pneumoniae and P. aeruginosa were also studied.


Thorium(IV), Mixed ligand complexes, Morpholinobenzyl semicarbazide.

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