REACTIONS OF THE MO=S BOND IN THE [(CP)MO(O)(MU-S)2MO(O)(S)]- COMPLEX WITH SO2 - AN H-1-NMR STUDY AND THE SYNTHESIS AND STRUCTURAL CHARACTERIZATION OF [(CP)MO(O)(MU-S)2MO(O)(L)]- COMPLEXES CONTAINING SO2-DERIVED SULFITE, THIOSULFATE, AND SULFATE BIDENTATE CHELATING LIGANDS

The reactions of the Mo=S unit in the [(Cp)Mo(O)(mu-S)2Mo(O)(S)]- complex with SO2 at various temperatures give various products of the type [(CP)Mo(O)(mu-S)2Mo(O)(L)]- (L = SO32-, S2O32- , and SO42-). A H-1-NMR study of these reactions indicates that the final products isolated and structurally characterized are derivatives of the unstable [(Cp)Mo(O)(mu-S)2Mo(O)(S2O2)]-complex that forms initially by SO2 addition to the Mo=S unit and undergoes further reactions with SO2.