Synthesis and characterization of manganese(II), cobalt(II), nickel(II), copper(II) and zinc(II) complexes with new Schiff base derived from 6,7-dimethyl-quinoxaline-2,3(1H,4H)-dione and thiosemicarbazide
Open Access
- 31 March 2015
- journal article
- Published by European Journal of Chemistry in European Journal of Chemistry
- Vol. 6 (1), 44-47
- https://doi.org/10.5155/eurjchem.6.1.44-47.1140
Abstract
New transition metal complexes of quinoxaline-2,3-dione-thiosemicarbazone ligand were prepared and characterized by elemental analysis, 1H and 13C NMR spectroscopy. The ligand (LH) was obtained by the reaction of 6,7-dimethyl-quinoxaline-2,3(1H,4H)-dione with thiosemicarbazide. All the complexes are found to be monomer in nature and have tetrahedral geometry. The IR spectra data revealed that the new Schiff base behaved as monobasic tridentate ligand through deprotonation of thiol-SH group, oxygen atom of C=O of pyrazine moiety and nitrogen atom of azomethine -C=N- group. However, the molar conductivity measurements proved the neutral nature of all metal complexes in DMSO solution, as well as the magnetic moment measurements investigated the high spin properties of all complexes.Keywords
This publication has 19 references indexed in Scilit:
- Spectral characterization, electrochemical and anticancer studies on some metal(II) complexes containing tridentate quinoxaline Schiff baseSpectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2014
- Synthesis, characterization, electrochemical and biological studies on some metal(II) Schiff base complexes containing quinoxaline moietySpectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2014
- Synthesis, Characterization and Antimicrobial Activity of Oxovanadium(IV) Complexes of Schiff Base Hydrazones Containing Quinoxaline MoietyChinese Journal of Chemistry, 2012
- Synthesis and antimycobacterial activity of new quinoxaline-2-carboxamide 1,4-di-N-oxide derivativesEuropean Journal of Medicinal Chemistry, 2010
- Two novel bis-azomethines derived from quinoxaline-2-carbaldehydeActa Crystallographica Section C Crystal Structure Communications, 2009
- Synthesis, characterization and in vitro antibacterial activity of new steroidal thiazolo quinoxalinesEuropean Journal of Medicinal Chemistry, 2007
- Using coordination chemistry to design new medicinesCoordination Chemistry Reviews, 2006
- Novel substituted quinoxaline 1,4-dioxides with in vitro antimycobacterial and anticandida activityEuropean Journal of Medicinal Chemistry, 2002
- Reactions of 3-([(trifluoromethyl)sulfonyl]oxy)-1H-indole derivatives with diamines and carbon nucleophiles. Synthesis of 6H-indolo[2,3-b]quinoxaline derivativesTetrahedron, 1998
- Synthesis and antituberculosis activity of some new 2-quinoxalinecarbonitrilesIl Farmaco, 1998