Transition metal complexes with a new tridentate ligand, 5-[6-(5-mercapto- 1,3,4-oxadiazol-2-yl)pyridin-2-yl]-1,3,4-oxadiazole-2-thiol
Open Access
- 1 January 2007
- journal article
- Published by National Library of Serbia in Journal of the Serbian Chemical Society
- Vol. 72 (4), 357-366
- https://doi.org/10.2298/jsc0704357g
Abstract
A new ligand 5-[6-(5-mercapto-1,3,4-oxadiazol-2-yl)pyridin-2-yl]-1,3,4-oxadiazole- 2-thiol (L) and its Mn(II), Co(II), Ni(II), Cu(II), and Zn(II) complexes were synthesized. The authenticity of the ligand and its transition metal complexes were established by elemental analyses, conductance and magnetic susceptibility measurements, as well as spectroscopic (IR, 1H- and 13C-NMR, electronic, mass, ESR) and thermal studies. The IR and 1H-NMR spectral studies revealed the existence of the ligand in the thiol form in the solid state, whereas in the thione form in the dissolved state. The magnetic and electronic spectral studies suggest an octahedral geometry for all the complexes. The ligand acts as a tridentate ligand coordinating through the pyridine nitrogen and the nitrogen atoms (N-3' and N-3'') of the two oxadiazole rings. Antimicrobial screening of the ligand and its metal complexes were determined against the bacteria Escherichia coli and Bacillus cirroflagellosus, as well as against the fungi, Aspergillus niger and Candida albicans. .Keywords
This publication has 7 references indexed in Scilit:
- Synthesis of 1,3,4-mercapto-oxadiazole mono- and dinuclear copper(I) and copper(II) complexes and their microbiological activityTransition Metal Chemistry, 2004
- Synthesis, Spectroscopic Characterization and Properties of New Metal ComplexesTransition Metal Chemistry, 2004
- Electrospray ionization mass spectrometric study of 1,3,4-oxadiazole–copper complexesJournal of Mass Spectrometry, 2004
- Synthesis, structural characterisation and electrochemical and antibacterial studies of Schiff base copper complexesTransition Metal Chemistry, 2004
- A New Conjugated Polymer Chemosensor Functionalised with 2,6-Bis(1,3,4-oxadiazole-2-yl)pyridine for Metal Ion RecognitionChemistry Letters, 2002
- Synthesis and Characterization of Mononuclear Copper(II), Cobalt(II) and Nickel(II) Chelates with New Bidentate Aromatic Schiff BasesSynthesis and Reactivity in Inorganic, Metal-Organic, and Nano-Metal Chemistry, 1997
- Stereochemistry and electronic structure of oxovanadium(IV) chelates with tetradentate Schiff base ligands derived from 1,3-diaminesInorganic Chemistry, 1974