Notizen: Redistribution Reactions of Monoorganothallium Compounds

Abstract

Abstract Disproportionation of monoorganothallium acetate RT1X2 (X = CH3COO) does not become evident at room temperature since equilibrium concentrations of disproportionation products, R2TIX or TIX3 are too small to be detected, e.g. by NMR spectroscopy (solvent: CD3COCD3/ CH3OH; R = C6H5, CHs). (CH3O)3P, which had been used in the synthesis of Aryl2TlY (Y = CF3COO) from ArylTlYa [1], continuously removes TIX3 from the equilibrium and effects disproportionation of ArylTlX2. In the same way disproportionation of an AlkylTlX2 compound (Alkyl = CH3) could be accomplished for the first time. The exchange of the organic groups is rate determining.