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.

 

References

1 J.H.K.K. Hirchberg, A. Ramzi, R.P. Sybesma and E.W. Meiger, Macromolecules, 2003, 36, 1429-1432.         [ Links ]

2 A. Marsh, S.J. Cartisle and S.C. Smith, Tetrahedron Lett., 2001, 42, 493-496.         [ Links ]

3 M. Pallarawarpan, S. Reyes, Z. Xia, M.C. Zaccaro, H.U. Saragovi and K. Burgess, J. Med. Chem., 2003, 46, 3565-3567.         [ Links ]

4 W. Dinku, N. Megersa, VJ.T. Raju, T. Soloman, J.A. Joensson and N. Retta, Bull. Chem. Soc. Ethiop., 2003, 17, 33.         [ Links ]

5 W. Dinku, N. Megersa, VJ.T. Raju, T. Soloman, J.A. Joensson and N. Retta, Bull. Chem. Soc. Ethiop., 2001, 17, 29.         [ Links ]

6 J.R.G. Mascaros, J.M. Clemente-juan and K.R. Dunbar, J. Chem. Soc., Dalton Transaction, 2002, 27, 10-17.         [ Links ]

7 F. Voegtle, Supramolecular Chemistry: An Introduction, John Wiley & Sons, New York, 1991.         [ Links ]

8 J.M. Lehn, Supramolecular Chemistry: Concepts and Perspectives, VCH, Germany, 1995.         [ Links ]

9 M.D. Milton and J.D. Singh, Design and Synthesis of Organoselenium Based Multidonors, Indian Institute of Technology, Department of Chemistry, New Delhi, 2002.         [ Links ]

10 V Pacakora, K Stulik and J. Jiska, J. Chromatogr. A, 1996, 754,17-31.         [ Links ]

11 N.R. El-Brollosy, Phosphorus Sulfur Rel. Elem., 2000, 163, 77-89.         [ Links ]

12 R.M. Abdel Rahman, J.M. Morsy, F. Hanafy and H.A. Arnene, Pharmazie, 1999, 54, 347.         [ Links ]

13 K. Singh, M.S. Barwa and P. Tyagi, Eur. J. Med. Chem. , 2007, 42, 394-402.         [ Links ]

14 K. Singh, M.S. Barwa and P. Tyagi, Eur. J. Med. Chem, 2006, 41, 147-153.         [ Links ]

15 K. Singh, D.P. Singh, M.S. Barwa, P. Tyagi and Y. Mirza, J. Enzyme Inhib. Med. Chem, 2006, 21(6), 749-755.         [ Links ]

16 A.I. Vogel, A Textbook Qualitative Chemical Analysis, 5th edn., Addison Wesley Longman, London, (1999).         [ Links ]

17 A. Dornow and H. Menzel, P. Marx, Chem. Ber, 1964, 97, 2173-2178.         [ Links ]

18 F. Heshmatpour, M. Ghassemzadeh, S. Bahenmat, J. Malakortikhah, B. Neumuller and A. Rothenberger, Z. Anorg. Allg. Chem, 2007, 633, 1178-1182.         [ Links ]

19 G. Singh, Ph. A. Singh, A.K. Sen, K. Singh, S.N. Dubey, R.N. Handa and J. Choi, Synth. React. Inorg. Met. Org. Chem., 2002, 32(1), 171-187.         [ Links ]

20 A.H. Osman, M.S. Saleh and S.M. Mohmoud, Synth. React. Inorg. Met. Org. Chem., 2004, 34, 1069-1085.         [ Links ]

21 S. Gaur and B. Sharma, J. Ind. Chem. Soc., 2003, 8, 841-842.         [ Links ]

22 T.T. Daniel and K. Natarajan, Transition Met. Chem., 2000, 25, 311-314.         [ Links ]

23 P.G. Avaji, A.P. Patil and P.S. Badami, J. Coord. Chem., 2008, 61, 1884-1896.         [ Links ]

24 K. Nakamoto, Infrared Spectra of inorganic and Coordination Compounds, 5th edn, Part B, Wiley Interscience, New York, 1997.         [ Links ]

25 A.B.P. Lever, Inorganic Electronic Spectroscopy, Elsevier, Amsterdam, 1984; M.H. Klingele and S. Brooker, Coord. Chem. Rev, 2003, 241(1-2), 119-132.         [ Links ]

26 E. Canpolat and M. Kaya, J. Coord. Chem., 2004, 57(14), 1217-1223.         [ Links ]

27 S.A. Sallem, Transition Met. Chem. 2005, 30, 341-351.         [ Links ]

28 M.A. Phaniband and S.D. Dhumwad, J. Coord. Chem. , 2009, 62(14), 2399-2410.         [ Links ]

 

 

Received 15 June 2010
Revised 28 August
Accepted 8 September 2010

 

 

* To whom correspondence should be addressed. E-mail: yogikhosya@gmail.com