Monomeric, dimeric and polymeric [Cp2MoH2] complexes with Ag-S bonds

The reaction of [Cp2MoH2] and AgBF4 with the dithio ligands Na(S2CPh) and K (S2CO ' Pr) afforded the complexes [(CP2MoH2AgS2CPh)(2)] (1) and [(Cp2MoH2A gS2CO ' Pr)(2)] (2). Using the monothio ligands Na(SC(O)Ph), K(SC(O)CH3) an d Na(S(NHPh)C=C(CN)(2)) the complexes [(Cp2MoH2AgSC(O)Ph)(2)] (3), [((Cp2Mo H2)(2)(AgSC(O)CH3)(3))(n)] (4) and [(Cp2MoH2)(2)AgS(NHPh)C=C(CN)(2)] (6) we re formed. The reaction of thiobenzamide and [(Cp2MoH2)(2)AgCl] gave the co mplex [(Cp2MoH2Ag(Cl)S(NH2)CPh)(2)] (5). Complexes 1 and 2 have a dimeric s tructure with the two dithio ligands bridging the two silver atoms. Complex 3 is also a dimer, however, the monothio ligands are coordinated with thei r single sulphur atoms to the silver atoms. In the polymer 4 the thioacetat e ligand has the same bonding mode as in 3. The three-dimensional structure of 4 is built-up of parallel strings. In the dimer 5 the thiobenzamide lig ands bind with the sulphur atom to a silver atom each. Complex 6 has a mono meric structure in which the silver atom is coordinated to two [Cp2MoH2] li gands and to the sulphur atom of the S(NHPh)C-C(CN), ligand. Compounds 1-6 were characterised analytically and spectroscopically and the structures we re determined by single crystal X-ray analyses. (C) 2001 Elsevier Science B .V. All rights reserved.