Photochemistry and dynamics of vinyl bromide and vinyl iodide in rare gas matrices

Dora M. Paolucci, Katherine Gunkelman, Michael T. McMahon, Jeanine McHugh, Samuel A. Abrash

Research output: Contribution to journalArticlepeer-review


Dilute solid solutions of vinyl bromide in krypton and vinyl iodide in argon were photolyzed at 10 K with a medium pressure mercury lamp. When the vinyl bromide is photolyzed, both hydrogen bromide-acetylene complexes and bromoacetylene are observed as photolysis products. Kinetic analysis shows that the hydrogen bromide-acetylene complexes are the only primary photolysis products and that the bromoacetylene is formed by secondary photolysis of the hydrogen bromide-acetylene complexes. Similar results are observed for the photolysis of vinyl iodide, with hydrogen iodide-acetylene complexes the only primary products and iodoacetylene observed as a secondary photolysis product of the hydrogen iodide-acetylene complex. We present the first reported vibrational frequencies for the HI-acetylene complex.

Original languageEnglish (US)
Pages (from-to)10506-10510
Number of pages5
JournalJournal of Physical Chemistry
Issue number26
StatePublished - Jan 1 1995
Externally publishedYes

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry


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