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Volume 22, Issue 5, Pages 361-370

Complexation of Cd(SeCN)2 with imidazolidine-2-thione and its derivatives: Solid state, solution NMR and anti-bacterial studies

Bassem A. Al-Maythalony,1 Mohammed I. M. Wazeer,1 Anvarhusein A. Isab,1 M. T. Nael,2 and Saeed Ahmad3

1Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran-31261, Saudi Arabia
2Microbiology Laboratory, Department of Botany, Mysore University, Manasagangothri Mysore-570006, Karnataka, India
3Department of Chemistry, University of Engineering and Technology, Lahore-54890, Pakistan

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.


Reactions of imidazolidine-2-thione (Imt), 1,3-diazinane-2-thione (Diaz) and 1,3-diazipane-2-thione (Diap) with Cd(SeCN)2 in acetonitrile resulted in the formation of 2:1 tetrahedral complexes. Both solid state and solution NMR, confirm the exocyclic thione atom to be the donor in all cases. 113Cd shielding tensors and anisotropies were calculated from the solid-state NMR spectra. Based on the solid NMR data, a distorted tetrahedral dispositions of ligands around cadmium is proposed for the Imt complex. However, when the Imt ligand is substituted with one or two R groups (where R=Me, Et or i-Pr) forming RImt or R2Imt, a five coordinate complex with polymeric structure [(RImt)Cd(SeCN)2] or [(R2Imt)Cd(SeCN)2] is observed. Antibacterial studies of some of the complexes were carried out.