mu-hydroxo/alkoxo-mu-oxo-mu-sulfonato-kappa O :kappa O '-bis[trichloroantimony(V)] compounds. Binuclear antimony(V) complexes with sulfonate groups as bridging ligands

Sulfonic acids react with antimony(V) chloride and water and water/alcohol resp. dependent of the molar ratios yielding Cl3SbO(OH)(O2S(O)CH3)SbCl3 (1) , Cl3SbO(OH). (O2S(O)CF3)SbCl3 (3) the monohydrate Cl3SbO(OH). (O2S(O)CH3)S bCl3. H2O (2) and the compounds Cl3SbO(OR')(O2S(O)CF3)SbCl3, (4: R' = CH3; 5: R'= C2H5) and Cl3SbO(OCH3)(O2S(O)C2H5) SbCl3 (6) resp. The crystal and m olecular structures of 1 to 3, 5 and 6 are determined. 1 and 3 are associat ed by hydrogen bonds to dimers and crystallize monoclinic (1: P2(1)/c; 3: P 2(1)/n). 2 is a hydroxonium salt H3O+[Cl3SbO2(O2S(O)CH3)SbCl3](-) with stro ng hydrogen bonds between cations and anions and crystallizes triclinic (P (1) over bar). 5 and 6 crystallize monoclinic (5: P2(1)/m; 6: P21/c). In 1 and 3 to 6 there is an intramolecular reorientation or an intermolecular ex change of protons and R' groups in solution. The NMR spectra are discussed.