Gas-phase photodissociation of AuCH2 +: The dissociation threshold of jet-cooled and rotationally thermalized ions

Fernando Aguirre, John Husband, Christopher J. Thompson, Ricardo B. Metz

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The photofragment spectra of jet-cooled and rotationally thermalized AuCH2 + are reported. Two channels are observed: loss of H2 and loss of CH2 with a branching ratio of 1.4:1 over the region studied. The presence of a threshold at 322 nm for the dissociation of jet-cooled AuCH2 + to Au++CH2 implies the upper limit D0 o(Au+-CH2)≤372±3 kJ mol-1. The dissociation threshold of ions rotationally thermalized in an ion trap shifts to lower energy by the amount of parent rotational energy.

Original languageEnglish
Pages (from-to)466-470
Number of pages5
JournalChemical Physics Letters
Issue number4-5
Publication statusPublished - Feb 25 2000


ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Spectroscopy
  • Atomic and Molecular Physics, and Optics

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