Competing dissociation channels in the infrared multiphoton decomposition of ethyl vinyl ether. [p]

Journal Article · Tue Mar 15 00:00:00 EST 1983 · J. Chem. Phys.; (United States)

DOI:https://doi.org/10.1063/1.445157· OSTI ID:5709186

Huisken, F; Krajnovich, D; Zhang, Z; Shen, Y R; Lee, Y T

Infrared multiphoton decomposition of ethyl vinyl ether (EVE) has been investigated by the crossed laser-molecular beam technique. Competition is observed between the two lowest-energy dissociation channels: (1) EVE ..-->.. CH/sub 3/CHO+C/sub 2/H/sub 4/, and (2) EVE ..-->.. CH/sub 2/CHO+C/sub 2/H/sub 5/. Center-of-mass product translational energy distributions were obtained for both dissociation channels. The products of reactions (1) and (2) are formed with mean translational energies of 31 and 5 kcal/mol, respectively. The branching ratio shifts dramatically in favor of the higher energy radical producing channel as the laser intensity and energy fluence are increased, in agreement with the qualitative predictions of statistical unimolecular rate theory.

• Research Organization: Materials and Molecular Research Division, Lawrence Berkeley Laboratory, Berkeley, California 94720
• OSTI ID: 5709186
• Journal Information: J. Chem. Phys.; (United States), Journal Name: J. Chem. Phys.; (United States) Vol. 78:6; ISSN JCPSA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400500* -- Photochemistry
ANGULAR DISTRIBUTION
BEAMS
CHEMICAL REACTIONS
DECOMPOSITION
DISSOCIATION
DISTRIBUTION
ELECTROMAGNETIC RADIATION
ETHERS
INFRARED RADIATION
LASER RADIATION
MOLECULAR BEAMS
MULTI-PHOTON PROCESSES
ORGANIC COMPOUNDS
ORGANIC OXYGEN COMPOUNDS
RADIATIONS
VELOCITY