SYNTHESIS OF TETRAPHENYLSTIBONIUM ALKYL- AND ARYLSULPHONATES. CRYSTAL STRUCTURE OF TETRAPHENYLSTIBONIUM BENZENESULPHONATE HYDRATE

Article abstract of DOI:10.1016/0022-328X(85)88068-2

The tetraphenylstilbonium sulphonates Ph4SbO3SR*nH2O (n = 1, R = C6H5; n = 0, R = CH3, CF3, CH2CH2OH, 4-CH3C6H4, 2,4-(NO2)2C6H3) have been obtained by neutralization of tetraphenylstibonium hydroxide with the appropriate alkyl- or aryl-sulphonic acid.The crystal structure of tetraphenylstibonium benzenesulfonate hydrate has been determined by single crystal X-ray diffraction.The sulphonate group is unidentately coordinated to antimony, which has a distorted trigonal bipyramidal environment.The rather long Sb-O bond, (2.506(4) Angstroem) and the distortion of the polyhedron around Sb, and the IR data for the sulphonate group are consistent with the assumption of a large ionic bond character in the Sb-O bond.From IR data analogous molecular structures are inferred for the other tetraphenylstibonium sulphonates.