Cyclotrigermenes oxidation

The first landmark was the successful synthesis and structural characterization of the cyclotrigermylium cations 2 and 19 by Sekiguchi and co-workers. This was achieved by reaction of trityl cation with the cyclotrigermenes 20 in the presence of weakly coordinating borate anions (Scheme 8). The trityl cation acts here as a one-electron oxidizing reagent and the resulting radical cation of 20 decomposes to the... 

Historically, the first solid state structure of a truly tricoordinated cation of the heavier group 14 elements (Si-Pb) was that of the cyclotrigermenium cation [((t-Bu3Si)Ge)3], 2 published in 1997. Cation 2 was prepared by one-electron oxidation of the cyclotrigermene 20 (E = Si) with trityl cation (see Scheme 8). " ... 

Oxidation of cyclotrigermenes — formation of the free germyl cation... 

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