Nathan W Fenwick, Richard Telford, William H C Martin, Richard D Bowen
A convenient method of applying competition experiments to devise a Hammett correlation in the dissociation by α-cleavage of 17 ionised 3- and 4-substituted benzophenones, YC6 H4 COC6 H5 [Y=F, Cl, Br, CH3 , CH3 O, NH2 , CF3 , OH, NO2 , CN and N(CH3 )2 ] is reported and discussed. The results given by this approach, which rely on the relative abundance of [M-C6 H5 ]+ and [M-C6 H4 Y]+ ions in the electron ionisation spectra of the substituted benzophenones, are compared with those obtained by previous methods...
July 5, 2023: European Journal of Mass Spectrometry