1. This lecture abstract is considered to be pare 14 of gas-phase reactions and part 91 of photoeleccron spectra and molecular properties; For preceding publications cf. H. Bock, A. Bowling, B. Solouki and T. J. Barton, J. Am. Chem. Soc., in print, as well as2–13
2. H. Bock, S. Aygen, P. Rosmus and B. Solouki, Chem. Ber., in print.
3. Unstable intermediates. 5. Thioketene