Mono and Poly‐nuclear Silver(I) Complexes with Thiosaccharin and Triphenylphosphine. Synthesis,Spectroscopic and Structural Characterization of Thiosaccharinato‐bis(triphenylphosphine)silver(I) and Tetrakis{thiosaccharinato(triphenylphosphine)silver(I)} |
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| Authors: | Mariana Dennehy Sandra D Mandolesi Oscar V Quinzani Dr Michael Jennings |
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| Institution: | 1. Bahía Blanca / Argentina, Universidad Nacional del Sur, Departamento de Química;2. Bahía Blanca / Argentina, Universidad Nacional del Sur, Departamento de QuímicaDepartamento de Química, Universidad Nacional del Sur, Avda. Alem 1253, B8000CPB Bahía Blanca/Argentina, Fax: (+54) 291‐4595160;3. London, Ontario / Canada, University of Western Ontario, Chemistry Department, X‐ray Structures Western |
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| Abstract: | The reaction of Ag6(tsac)6 ( 1 ) (tsac = thiosaccharinate anion) with triphenylphosphine gives rise to the already reported Ag(tsac)(PPh3)3] complex ( 2 ) and to two new silver‐thiosaccharinate‐phosphine complexes, Ag(tsac)(PPh3)2] ( 3 ) and Ag4(tsac)4(PPh3)4] ( 4 ) (PPh3= triphenylphosphine). Spectroscopic characterization was carried out using IR, UV‐Visible and NMR techniques and confirmed by single crystal X‐ray diffraction. In each complex a singular coordination mode for the thiosaccharinate ligand is observed. The most important features of the different coordination modes of the thionates are discussed. Compound 3 crystallizes in monoclinic system, space group Pn, with a = 11.2293(3) Å, b = 12.7282(3) Å, c = 13.6056(4) Å, β = 94.985(2)°, Z = 2; while crystals of compound 4 are monoclinic, space group P21/n, a = 15.024(3) Å, b = 14.681(3) Å, c = 21.914(4) Å, β = 95.31(3)°, Z = 2. The coordination around the silver atoms in both complexes consists of almost trigonal‐planar arrangements, AgP2S in 3 and AgS2P in 4 . |
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| Keywords: | Silver Thiosaccharinate complexes IR spectroscopy Crystal structures Triphenylphosphine |
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