Trichlorogermane superacidic properties

III. ACIDIC AND SUPERACIDIC PROPERTIES OF TRICHLOROGERMANE A. Chemical Examples and Determinations... 

The superacidic properties of trichlorogermane are clearly manifested in the properties of its etherates (vide infra) and the ability of DGeCl3 to participate in a deuterium-hydrogen exchange reaction with methylbenzenes32 (Section VIII.E). 

The unusual superacidic properties of trichlorogermane are clearly manifested in its reactions with aromatic compounds. Here, the hydrogermylation of the aromatic nucleus is the basic pathway of the reaction between trichlorogermane and aromatic compounds. In many cases the reaction is accompanied by processes of protodegermylation, alkylation, trans-cis isomerization of the trichlorogermyl derivatives of cyclohexane and formation of some organic salts with GeCl3 counterion. 

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