Triphenylmethyl Triphenylcarbonium

The ortho-ring junction that converts the triphenylmethyl structure into that of the ion LX increases the stability of the carbanion but decreases that of the carbonium ion. It will be recalled that this structural modification of the triphenylcarbonium ion had about the same effect as the introduction of one to two nitro groups. 

Gomberg in one of his papers on triphenylmethyl (Gomberg and Cone [38]) described carbonium perchlorates, e.g. triphenylcarbonium perchlorate... 

A soln. of boron iodide in pentane added to a soln. of triphenylmethyl iodide in methylene chloride -> triphenylcarbonium iodoborate. Y 91%.—The above salt and tropenium iodoborate are the first characterized salts of this anion reported. K. M. Harmon and F. E. Gummings, Am. Soc. 87, 539 (1965). 

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