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E-Journal of Chemistry
Volume 5 (2008), Issue 3, Pages 627-633

Synthetic, Spectral and Thermal Studies of Tin(IV) Complexes of 1, 5-Benzodiazepines

Suresh,1 Padaki Srinivas,2 T. Suresh,3 M. Revanasiddappa,4 and Syed Khasim5

1Department of Applied Science and Biotechnology, Bellary Engineering College, Bellary - 583 104, Karnataka, India
2Department of Chemistry, P.D.A. College of Engineering, Gulbarga - 585 102, Karnataka, India
3Department of Industrial Chemistry, Gulbarga University Post Graduate Centre, Vinayaka Nagar, Cantonment, Bellary- 583 104, Karnataka, India
4Department of Chemistry, PES School of Engineering, Hosur Road, Bangalore- 560 100 Karnataka, India
5Department of Physics, PES School of Engineering, Hosur Road, Bangalore- 560 100 Karnataka, India

Received 12 October 2007; Accepted 22 December 2007

Copyright © 2008 Hindawi Publishing Corporation. 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.


Tin(IV) complexes of 7-substituted 6,7-benzo-1,5-dizepines have been synthesized in absolute alcoholic medium. Elemental analysis indicates that the complexes have 1:2 stoichiometry of the type L2SnCl4, TGA data support this conclusion. Molar conductance values in DMF at 10–3 M suggest that, these complexes are non-electrolytes. Infrared spectral data shows the involvement of C=N and NH groups in coordination with the metal ion. X-ray diffraction pattern of few representative complexes indicate that, these are having simple cubic crystal structure. The energy of activation and order of reaction are calculated using TGA data of the complexes. All these information support that Sn(IV) in these complexes exhibits coordination number eight.