TY  - JOUR
AB  - Protonolysis of diphenylmethane (1) and three oligophenyl alkanes (2 to 4) has been studied by chemical ionization mass spectrometry of some deuterium-labelled analogues. 1H+ ions reveal that intra-ring proton equilibration is complete within 10 [mu]s whereas inter-ring proton exchange is slow. 2H+, 3H+, and 4H+ ions, additionally, undergo complete inter-ring proton equilibration involving all of the 16 or 21 protons at the aromatic rings. A surprising double C6H6 elimination is found to occur in 2H+, 3H+, and 4H+ ions, suggesting that C6H6 acts as a ‘solvent’ of [MH - C6H6]+ and [MH - 2C6H6]+ ions prior to final fragmentation.
DA  - 1983
DO  - 10.1016/0020-7381(83)87243-X
LA  - eng
IS  - Jan
M2  - 499
PY  - 1983
SN  - 0020-7381
SP  - 499-502
T2  - International Journal of Mass Spectrometry and Ion Physics
TI  - Ring-to-ring proton exchange in di- and oligophenyl alkanes upon gas phase protonolysis
UR  - https://nbn-resolving.org/urn:nbn:de:0070-pub-17743190
Y2  - 2024-11-22T07:17:30
ER  -