The rate constant for the protonation of benzonitrile radical anions formed in pulse radiolysis of aqueous benzonitrile solutions is (3.5 ± 0.5)× 1010 dm3 mol–1 s–1. A new 270 nm absorption band is attributed to the protonated benzonitrile anion. The pK of the protonation reaction is determined to be 7.4, in good accordance with values in the literature.
J. Holcman and K. Sehested, J. Chem. Soc., Faraday Trans. 1, 1975, 71, 1211 DOI: 10.1039/F19757101211
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