Table of Contents
International Journal of Inorganic Chemistry
Volume 2014, Article ID 580232, 9 pages
Research Article

Novel Low Spin Mixed Ligand Thiohydrazide Complexes of Iron(III): Synthesis, Spectral Characterization, Molecular Modeling, and Antibacterial Activity

1Department of Chemistry, Presidency University (Former Presidency College), Kolkata 700073, India
2Department of Chemistry, Calcutta University College of Science and Technology, Kolkata 700009, India
3Pacific Northwest National Laboratory, 902 Battelle Boulevard, Richland, WA 99354, USA
4Department of Polymer Science and Technology, Calcutta University College of Science and Technology, Kolkata 700009, India

Received 13 June 2014; Revised 12 August 2014; Accepted 15 August 2014; Published 17 September 2014

Academic Editor: Maurizio Peruzzini

Copyright © 2014 Dolan Sengupta et al. 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.


Mixed ligand complexes of Fe(III) with aromatic thiohydrazides of general composition [Fe(acac)(L)2] have been synthesized and characterized (acac-acetylacetonate, L = bidentate uninegative aromatic thiohydrazide ligand, for example, thiobenzhydrazide, 2-hydroxythiobenzhydrazide, furan-2-thiohydrazide, and thiophen-2-thiohydrazide). The magnetic susceptibility data and the EPR spectra of these complexes suggested the formation of rhombically distorted low spin iron center (d5) in octahedral environment, which was also supported by the UV-vis spectral data of the complexes. Biological studies of these complexes also indicated that the iron-thiohydrazido complexes have superior antibacterial properties compared to the corresponding ligands.