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Related Experiment Videos

Collision complexes in dissociative single electron transfer between Ne2+ and N2.

Sarah M Harper1, Sunny W-P Hu, Stephen D Price

  • 1Chemistry Department, University College London, 20 Gordon Street, London, WC1H 0AJ United Kingdom.

The Journal of Chemical Physics
|July 23, 2004
PubMed
Summary

Investigating the Ne2+ and N2 reaction reveals a pathway involving a temporary collision complex. This complex, N2Ne2+, dissociates into Ne+ and N+ ions and neutral N atoms.

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Area of Science:

  • Chemical Physics
  • Atomic and Molecular Collisions
  • Reaction Dynamics

Background:

  • Dissociative electron transfer reactions are fundamental processes in chemical physics.
  • Understanding the reaction dynamics of multiply charged ions with neutral molecules is crucial for various fields.
  • Previous studies have explored ion-molecule reactions, but detailed insights into complex formation and dissociation pathways are often limited.

Purpose of the Study:

  • To investigate the dissociative electron transfer reaction between Ne2+ and N2 at a specific collision energy.
  • To determine the nascent velocity vectors of ionic (Ne+, N+) and neutral (N) products.
  • To elucidate the reaction mechanism, particularly the role of transitory collision complexes.

Main Methods:

  • Coincident detection of Ne+ and N+ monocationic products.

Related Experiment Videos

  • Measurement of ionic and neutral product velocity vectors.
  • Analysis of correlations between product velocity vectors to infer reaction pathways.

    • Main Results:

    • The study successfully determined the nascent velocity vectors of all ionic and neutral products.
    • Correlations between these velocity vectors provided evidence for a specific reaction pathway.
    • One identified pathway involves the dissociation of a transitory collision complex, N2Ne2+.

    Conclusions:

    • The dissociative electron transfer reaction between Ne2+ and N2 proceeds, in part, through a collision complex.
    • The formation and subsequent dissociation of the N2Ne2+ complex is a key mechanism in this reaction.
    • This research provides detailed insights into the dynamics of ion-molecule reactions involving multiply charged ions.