SYNTHESIS, CHARACTERIZATION AND X-RAY CRYSTAL-STRUCTURE OF [AG(HTSA)(PPH3)(3)] (H(2)TSA = O-HS(C6H4)CO2H) - COMPARISON WITH [AU(HTSA)(PPH3)]

A novel, monomeric triphenylphosphine silver(I) complex [Ag(Htsa)(PPh3 )(3)] (H(2)tsa=o-HS(C6H4)CO2H) was synthesized from three different li gand-exchange reactions, as 3 without any solvate or as 3a with CH2Cl2 solvate, in good yield. The complex 3 can be interconverted with the previously obtained, two antimicrobially-active silver(Ir thiosalicyla tes; one was the oligomeric, water-soluble complex (Na[Ag(tsa)]. H2O)( n), 1 (n = 21-27) and the other the polymeric, water-insoluble complex [Ag(Htsa)](n), 2. The analogous gold(I) complex [Au(Htsa)CPPh3)], 4, was also isolated. The complexes 3, 3a and 4 were characterized with c omplete elemental analyses, TG/DTA, FT-IR and multinuclear NMR (H-1,C- 13, P-31 and Ag-109) spectroscopies. The crystal structures of 3 and 4 were determined with single-crystal X-ray diffraction. The monomeric structure for 3 and the dimeric structure via hydrogen bonds of the ca rboxylic acid for 4 in the solid state were found. (C) 1998 Elsevier S cience Ltd. All rights reserved.