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Ultrafast dissociat...
Abstract
Ämnesord
Stäng
- Dissociation, a simple unimolecular reaction, can be obscure, especially in complex molecules with inuirnerous degrees of freedom. Here we suggest an ultrafast dissociation mechanism involving multimode dynamics evolving on the barrierless potential energy surface. The mechanism is elaborated from the analysis of the nuclear dynamics in X-ray excited molecules. It implies that in large molecules dissociation may yield to heavy fragments on very short timescales owing to the internal motion of light linkages. In particular, the rotation of the C2H4-moiety in 1-bromo-2-chloroethane leads to the dissociation of C-C1 or C-Br bonds in C12p or Br3d core-excited states in similar to 7 is.
Ämnesord
- NATURVETENSKAP -- Fysik -- Annan fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Other Physics Topics (hsv//eng)
Nyckelord
- Molecules
- Quantum chemistry
- Degrees of freedom (mechanics)
- Molecules
- Potential energy
- Quantum chemistry
- Complex molecules
- Core-excited state
- Excited molecules
- Heavy fragments
- Multimode dynamics
- Nuclear dynamics
- Ultrafast dissociation
- Unimolecular reactions
Publikations- och innehållstyp
- ref (ämneskategori)
- kon (ämneskategori)