Stopped flow studies of the mechanisms of ozone-alkene reactions in the gas phase: tetramethylethylene

Journal Article · Wed Feb 11 23:00:00 EST 1987 · J. Phys. Chem.; (United States)

DOI:https://doi.org/10.1021/j100288a036· OSTI ID:6868498

Martinez, R I; Herron, J T

The reaction of ozone with tetramethylethylene (TME) has been studied in the gas phase at 294 K and 539 Pa (4 Torr) with a stopped-flow reactor coupled to a photoionization mass spectrometer. The concentrations of reactants and products were determined as a function of reaction time. The major products were (CH/sub 3/)/sub 2/CO, H/sub 2/CO, CH/sub 3/C(O)CH/sub 2/OH (hydroxyacetone), and CH/sub 3/C(O)C(O)H (methylglyoxal). Computer simulation of the experimentally observed temporal profiles supports the mechanism shown in Scheme I. The hot ester channel (R,R''COO ..-->.. R'C(O)OR''* ..-->.. products) available to the H/sub 2/COO formed by ozonolysis of terminal olefins R'R''C double bonded CH/sub 2/ is not available for alkyl-substituted R'R''COO. Thus the secondary chemistry for R'R''COO is substantially different from that for H/sub 2/COO.

• Research Organization: National Bureau of Standards, Gaithersburg, MD
• OSTI ID: 6868498
• Journal Information: J. Phys. Chem.; (United States), Journal Name: J. Phys. Chem.; (United States) Vol. 91:4; ISSN JPCHA
• Country of Publication: United States
• Language: English

Related Subjects

37 INORGANIC, ORGANIC, PHYSICAL, AND ANALYTICAL CHEMISTRY
400201* -- Chemical & Physicochemical Properties
ALKENES
CHEMICAL REACTIONS
DATA
EXPERIMENTAL DATA
FLUIDS
GASES
HYDROCARBONS
INFORMATION
LOW PRESSURE
MASS SPECTROSCOPY
MEDIUM TEMPERATURE
NUMERICAL DATA
ORGANIC COMPOUNDS
OZONE
REACTION INTERMEDIATES
SPECTROSCOPY
TIME DEPENDENCE