Formation and Properties of Enyne Radical Cation

  • Kim, Bang-Duk (Department of Chemistry, School of Molecular Science-BK21, Korea Advanced Institute of Science and Technology) ;
  • Shim, Sang-Chul (Department of Chemistry, School of Molecular Science-BK21, Korea Advanced Institute of Science and Technology) ;
  • Noboyuki Ichinose (The Institute of Scientific and Industrial Research, Osaka University) ;
  • Sachiko Tojo (The Institute of Scientific and Industrial Research, Osaka University) ;
  • Tetsuro Majima (The Institute of Scientific and Industrial Research, Osaka University)
  • Published : 2001.06.01

Abstract

Radical cations of DPBEY and PPCB were generated by ${\gamma}$-radiolysis and pulse radiolysis in halogenated solvents. The radical cation PPCB+ shows 505 (shoulder) and 520 nm absorption peaks with 700 ns lifetime in agreement with the laser flash photolysis work and strongly support the exciplex mechanism proposed for the photoreaction of PPCB and dimethylfumarate.

Keywords

References

  1. J. Chem. Soc. Chem. Comm. Photochemistry of conjugated poliynes Shim S.C.
  2. Tetrahedron Lett. v.31 Photochemistry of conjugated polyacetylenes: photoreaction of 1.4-diphenyl-1,3-butadiyne with dimethyl fumarate Lee S.J.;S.C. Shim
  3. Tetrahedron Letters v.42 Photoaddition of 1,4-diphenyl-1,3-butadiyne to dimethyl fumarate: a novel exciplex mechanism Kim B.D.;G.S. Kim;B. Tu;S.C. Shim
  4. Bull. Chem. Soc. Jpn. v.68 Stilbene Dimer Radical Cations in the Radiolyses of Stilbenes and 1,2,3,4-Tetraphenylcyclobutanes Tojo S.;K. Morishima;A. Ishida;T. Majima;S. Takamuku
  5. Can. J. Chem. v.73 Cyclobutene Photochemistry- Substituent Effects on the Photochemistry of Phenylcyclobutene Leigh W.J.;J.A. Postigo