Abstract
Direct titrations of the aromatic compounds of boron, containing 1–4 phenyl groups attached to the boron atom, with the solutions of mercuric nitrate and perchlorate are described. The titrations were performed using potentiometric and polarometric techniques. All the compounds, containing more than 1 phenyl group (tetraphenylboron compounds, triphenylboron, diphenylboric acid) react with mercuric ions in two distinct steps. In the first step phenylboric acid and diphenylmercury are formed, whereas in the later course of the titration both these products react with mercuric ions to form the corresponding phenylmercuric salt. Reverse titrations of mercuric ions with the solutions of sodium tetraphenylboron or with phenylboric acid are possible too. The results are presented in the figures and a short discussion follows.
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