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South African Journal of Chemistry
On-line version ISSN 1996-840X
Print version ISSN 0379-4350
S.Afr.j.chem. (Online) vol.63 Durban 2010
RESEARCH ARTICLE
Synthesis, characterization and thermal studies of Co(II), Ni(II), Cu(II) and Zn(II) complexes of some Schiff bases derived from 4-amino-3-mercapto-6-methyl-5-oxo-1,2,4 triazine
Kiran Singh*; Yogender Kumar; Manjeet S. Barwa
Department of Chemistry, Kurukshetra University Kurukshetra, Haryana, India-136119
ABSTRACT
Co(II), Ni(II), Cu(II) and Zn(II) Complexes of bidentate Schiff bases derived from the condensation of 4-amino-3-mercapto-6-methyl-5-oxo-1,2,4-triazine with 4-fluoro benzaldehyde and 2-acetyl furan were synthesized and characterized by various physico-chemical techniques. A square planar geometry was suggested for Cu(II) and octahedral geometry proposed for Co(II), Ni(II) and Zn(II). TG curves indicated that the complexes decompose in three to four steps. The presence of coordinated water in metal complexes was confirmed by thermal and IR data of the complexes.
Keywords: Synthesis, Schiff bases, 1,2,4-triazine, thermal study
Full text available only in PDF format.
Acknowledgements
Kiran Singh is highly thankful to Chairman, Department of Chemistry, Kurukshetra University Kurukshetra for providing necessary laboratory facilities. Thanks are also due to SAIF, Punjab University Chandigarh, for providing C, H, N analyses and spectral data.
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Received 15 June 2010
Revised 28 August
Accepted 8 September 2010
* To whom correspondence should be addressed. E-mail: yogikhosya@gmail.com