Abstract
The reaction of 2-benzoylpyridine thiosemicarbazone, {(C6H5)(py-N1)C2=N2-N3H-C1(=S)-N4H2, bzpytscH}, with palladium(II) chloride in acetonitrile yielded a heteroleptic complex, [Pd(N1,N2,S-bzpytsc)Cl] (1), in which the thio-ligand coordinated through pyridyl nitrogen (N1), azomethine nitrogen (N2) and sulfur as terdentate anion (N,N,S-bzpytsc–). In another reaction, pyrimidine-2-thione (pymtH) with mercury(II) chloride in CH3CN-DMF mixture formed a homoleptic compound, [Hg(N,S-pymt)2] (2), similar to the literature report of formation of a homoleptic compound, [Hg(κ1S-pyt)2], from HgCl2 and pytH in CH3CN-DMF. A reaction of mercury(II) bromide with pyridine-2-thione (pytH) in CH3CN-DMF mixture did not remove the bromides and rather yielded a heteroleptic complex of composition, [HgBr2(κ1S-pytH)2] (3). NMR (1H, 13C NMR) spectroscopy and infrared spectroscopy of 1–4 as well as crystal structures of 1, 3, and 4 are reported.
Acknowledgment
The author thanks the Guru Nanak Dev University for Honorary Professorship to Dr. Tarlok Singh Lobana, while S. Virdi and R. Dhiman thank the Department of Chemistry for their research facilities. The authors thank Isabel Garcia-Santos of Universidad de Santiago, Spain for instrumental assistance. Funding for this research (to RJB) was provided by the National Science Foundation, Directorate for Mathematical and Physical Sciences (Grant No. CHE-1039027).
Disclosure statement
No potential conflict of interest was reported by the authors.