Silver(I) complexes of imidazolidine-2-thione and triphenylphosphines: Solid-state, solution NMR and antimicrobial activity studies

Article type: Research Article

Authors: Al-Zamil, Norah O. | Al-Sadhan, Khulood A. | Isab, Anvarhusein A.^; | Wazeer, Mohamed I.M. | Al-Arfaj, Abdul Rehman A.

Affiliations: Department of Chemistry, Girls' College Dammam, Saudi Arabia | Department of Chemistry, King Fahd University of Petroleum and Minerals, Dhahran 31261, Saudi Arabia

Note: [] Corresponding author: Prof. A.A. Isab. Fax: +9663 860 4277; E-mail: [email protected].

Abstract: Mixed ligand complexes of Ag(I) with triphenylphosphine (PPh3), triphenylphosphine sulfide (SPPh3), triphenylphosphine selenide (SePPh3) and Imidazolidine-2-thione (Imt) have been prepared. The solution as well as solid state NMR studies have been carried out to characterize these complexes. Both solid and solution NMR show the coordination via thione group on one side and (S/Se) or PPh3 on the other side. A higher antimicrobial activity is shown by [ImtAgPPh3]Cl complex against gram negative Pseudomonas aeruginosa (P. aeruginosa) and Escherichia coli (E. coli) compared to the other two complexes i.e. [ImtAgSPPh3]Cl and [ImtAgSePPh3]Cl.

Keywords: Silver(I) complexes, imidazolidine-2-thione, triphenylphosphines, CP MAS NMR, antimicrobial activity

Journal: Spectroscopy, vol. 21, no. 1, pp. 61-67, 2007