摘要:
Addition of B2S3 to a methanolic solution of the MoVIO3L2- complex (L = NN-bis(ethanoic acid)-1-amino-2-methylthio-ethane) results in the formation of two different monomeric oxosulfidomolybdate(VI) complexes, [MoO2SL]2- and [MoOS2L]2- as indicated by H-1, C-13, O-17 and Mo-95 NMR spectroscopy and by the reaction of these two sulfurated species with triphenylphosphine. The temperature dependences of the H-1 NMR spectra indicate exchange processes for both sulfido complexes. Their redox properties are discussed and contrasted with those observed for the parent fac-trioxo molybdenum(VI) complex. The primary synthetic route to mixed oxo-sulfido [MoO3-nSnL]2- complexes described here can be extended to other aminodicarboxylic ligands like iminodiacetic acid.