Synthesis and structure of mu-oxo-bis-[(2,5-dimethylbenzenesulfonato)tri-p-tolylantimony(v)]

mu-Oxobis[(2,5-dimethylbenzenesulfonalo)tri-p-tolyantimony(v)] was prepared by the reaction of 2,5-dimethylbenzenesulfonic acid with tri-p-tolylstibin e in the presence of hydrogen peroxide. According to X-ray diffraction data , the linear O bridge links two Sb atoms having a trigonal bipyramidal conf iguration. The 2,5-dimethytbenzenesufonate group and the bridging O atom oc cupy the axial positions and the three tolyl substituents are equatorial. T he Sb(1)--O--Sb(2) and O--Sb--O angles are 180.0(0)degrees and 177.2(1)degr ees; the Sb-C(Ph)(eq) Sb--O(SO2Ar), and Sb--mu-O distances are 2.090(5)-2.0 95(6), 2.258(3), and 1.9361(5): respectively.