Bis(trifluoromethy1) peroxide is readily dissociated by multiple infrared photon excitation at COz laser wavelengths. The primary dissociation product is CF30; approximately 85% of the nascent radicals are further dissociated in the laser field to form CFzO and F. The F atoms then react with the rem
Infrared photochemistry of cyclobutyl chloride
β Scribed by J. S. Francisco; J. I. Steinfeld
- Publisher
- John Wiley and Sons
- Year
- 1981
- Tongue
- English
- Weight
- 516 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0538-8066
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β¦ Synopsis
Abstract
The decomposition of cyclobutyl chloride following multiple infraredphoton excitation has been investigated. The primary photolysis products are butadiene, from elimination of HCl, and ethylene and vinyl chloride, fromring scission. The vinyl chloride undergoes secondary decomposition to acetylene and HCl. In addition to these products, known from thermal VLPP experiments, we also find 1βbutene, which may arise from a higher energy Cο£ΏCl homolysis channel. Collisions with either reactant molecules oradded buffer gas lead to cooling of the laserβproduced vibrational energy distributions. The average amount of energy removed per collision is 15β20 kcal/mol for selfβcollisions and 2β4 kcal/mol with argon.
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Multiphoton krser-induced decomposition is reported here for photolysis of ketene with 9.260 pm radiation from a pulsed CO2 TEA laser. Chemical end products of this photolysis were primanly Ha and CO. Visible chemihtminescence, attributed to Ca Swan band emission, wns observed during the fust = 1 ps
The thermal decomposition of cyclobutyl chloride has been investigated over the temperature range of 892-1150 K using the technique of very low-pressure pyrolysis (VLPP). The reaction proceeds via two competitive unimolecular channels, one to yield ethylene and vinyl chloride and the other to yield
Following earlier room-temperature studies, gaseous mixtures of methyl cyclobutyl ketone (MCK) diluted in argon have been photolyzed at temperatures up to 205Β°C. Experiments have been carried out at a variety of pressures (up to ca. 2 atm) at wavelengths of 313 nm (steady state conditions) and 308 n