LOSS OF HYDROGEN-CYANIDE FROM MONOCYANOPYRIDINES UPON ELECTRON-IMPACT - DEWAR PYRIDINE STRUCTURES AND RING OPENING-RING CLOSURE REACTIONS REVEALED BY C-13-LABELING AND N-15-LABELING

@inproceedings{MolenaarLangeveld1979LOSSOH,
  title={LOSS OF HYDROGEN-CYANIDE FROM MONOCYANOPYRIDINES UPON ELECTRON-IMPACT - DEWAR PYRIDINE STRUCTURES AND RING OPENING-RING CLOSURE REACTIONS REVEALED BY C-13-LABELING AND N-15-LABELING},
  author={Tineke A. Molenaar‐Langeveld and Nico P. E. Vermeulen and Nico M. M. Nibbering and Roger Pearce Morgan and Anthony Gareth Brenton and John H. Beynon and Dilip K. Sen Sharma and Keith R. Jennings},
  year={1979}
}
Extensive 13C and 15N labelling has shown that the molecular ions of 2-, 3- and 4-cyanopyridine with lifetimes up to 10−6 s eliminate hydrogen cyanide originating predominantly from the ring (˜65%). Moreover, this hydrogen cyanide loss occurs after an equilibrated positional interchange of the ring carbon atoms at positions interchange of the ring carbon atoms at positions 2, 4 and 6 via Dewar pyridine structures. In molecular ions with lifetimes of 10−6–10−5 s skeletal rearrangements have… CONTINUE READING