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Synthesis, characterization, and biological activities of homo- and heterobimetallic complexes of Sn(IV) and Pd(II) with 2-mercapto-5-methyl benzimidazole

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Abstract

Organotin complexes have been synthesized by refluxing 2-mercapto-5-methyl benzimidazole with R2SnCl2/R3SnCl (R = Me, n-Bu, Ph) in 1:1 molar ratio in the first step. In the second step, synthesized organotin(IV) complexes were treated with CS2 and R2SnCl2/R3SnCl/PdCl2 to yield homo- and heterobimetallic complexes. The composition of the synthesized complexes, the bonding behavior of the donor groups, and structural assignments were studied by elemental analysis and different spectral techniques, including IR and multinuclear NMR (1H, 13C). The IR data shows bidentate nature of the ligand which is also confirmed by semiempirical study, while NMR data confirms the four-coordinated geometry in solution. The free ligand and its respective homo- and heterobimetallic complexes were screened in vitro against a number of microorganisms to assess their biocidal properties. The biological activity data show that complexes exhibits significant antibacterial and antifungal activities as compared to ligand with few exceptions.

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Acknowledgments

Pakistan Science Foundation is highly acknowledged for support under the project No. PSF/Res/P-GCU/Chem(436). SKS and KQ thanks the Head, App Sci. and Dean FET, MITS for encouragement and support.

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Authors and Affiliations

  1. Department of Chemistry, GC University, Faisalabad, Pakistan

    M. Rafiq & S. Shahzadi

  2. Department of Chemistry, Quaid-i-Azam University, Islamabad, 45320, Pakistan

    S. Ali

  3. Department of Chemistry and Biochemistry, University of Agriculture, Faisalabad, Pakistan

    M. Shahid

  4. Department of Applied Science and Humanities, Faculty of Engineering and Technology, Mody Institute of Technology and Science (Deemed University), Lakshmangargh, Dist. Sikar, Rajasthan, 332311, India

    S. K. Sharma & K. Qanungo

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  1. M. Rafiq
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  2. S. Ali
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Rafiq, M., Ali, S., Shahzadi, S. et al. Synthesis, characterization, and biological activities of homo- and heterobimetallic complexes of Sn(IV) and Pd(II) with 2-mercapto-5-methyl benzimidazole. J IRAN CHEM SOC 11, 169–178 (2014). https://doi.org/10.1007/s13738-013-0287-4

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  • DOI: https://doi.org/10.1007/s13738-013-0287-4

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