Collect. Czech. Chem. Commun. 1980, 45, 1775-1779

Synthesis and properties of some icosahedral carborane B,B'-dithiols

Jaromír Plešek, Zbyněk Janoušek and Stanislav Heřmánek

Institute of Inorganic Chemistry, Czechoslovak Academy of Sciences, 250 68 Řež


Reaction of icosahedral carboranes with excess sulfur over AlCl3 converts in high yields o-carborane to 9,12-, and m-carborane to 9,10- and 5(4),9-dithiols which were transformed by CH2Br2 to the appropriate cyclic thioformal derivatives. Reaction of 9,12(HS)2-1,2-C2B10H10 with acetone and AlCl3 afforded a cyclic thioketal, the structure of which was confirmed by X-ray structure analysis. All structures were proposed on the ground of 1H-, 11B-NMR and mass spectra.