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Silver(I) complexes with heterocyclic thiones and tertiary phosphines as ligands. Part 4. Dinuclear complexes of silver(I) bromide: the crystal structure of bis[bromo-(pyrimidine-2-thione)(triphenylphosphine)silver(I)] |
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| Authors: | Phil J Cox Paraskevas Aslanidis Petros Karagiannidis Sotiris Hadjikakou |
| Institution: | a School of Pharmacy, The Robert Gordon University, Schoolhill, Aberdeen, AB10 1FR, UK b Aristotle University of Thessaloniki, Faculty of Chemistry, Inorganic Chemistry Laboratory, PO Box 135, GR-540 06 Thessaloniki, Greece c Inorganic and Analytical Chemistry, Department of Chemistry, University of Ioannina, 45100 Ioannina, Greece |
| Abstract: | Mixed-ligand complexes of the formula Ag(PPh3)(L)Br]2 were obtained by treatment of various heterocyclic thiones L {L=pyridine-2-thione (py2SH), pyrimidine-2-thione (pymtH), benz-1,3-imidazoline-2-thione (bzimtH2), benz-1,3-thiazoline-2-thione (bztztH), 1-methyl-1,3-imidazoline-2-thione (meimtH) and 5-methoxy-benz-1,3-imidazoline-2-thione (5MeObzimtH2)} with equivalent quantities of silver(I) bromide and triphenylphosphine in dry acetone. The compounds were characterized by their IR, far-IR, UV–Vis and 1H NMR spectroscopic data. The crystal structure of Ag(PPh3)(pymtH)Br]2 was determined by single-crystal X-ray diffraction methods. The complex exhibits a planar Ag2Br2 moiety in which each of the doubly bromine-bridged Ag(I) centres is further bonded to one phosphine P and one thione S atom. |
| Keywords: | Crystal structures Heterocyclic thione complexes Photolysis Silver(I) bromide complexes Triphenylphosphine complexes |
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