Studies in chemical reactivity. Progress report, January 1-December 31, 1979. [1, 3-dichlorotetrafluoroacetone]
Technical Report
·
OSTI ID:5528443
Data on the collisional deactivation of chemically activated polyatomic molecules show a trend of decreasing <..delta..E>, the average energy removal per gas kinetic collision, with increasing size of activated molecule when polyatomic collider species of similar molecular structure and nearly constant number of atoms are used. Calculations of <..delta..E> by a quasistatistical transition modes model give quantitative agreement with the experimental data. Measurements of photoionization cross sections and yields of some organic molecules have been made in a double ionization chamber. Work is proceeding on an experiment to detect chemically ativated molecules by photoionization. Observations have been made of the production of CF/sub 2/ in the flash photolysis of 1, 3-dichlorotetrafluoroacetone, and the rate of removal of CF/sub 2/ by reaction. Observations have also been made on the production and removal of ClO when O/sub 2/ is present in the reaction. Analysis of reaction products from the steady illumination photolysis of 1, 3-dichlorotetrafluoroacetone and oxygen mixtures at 313 nm/have been done by gas chromatography, infrared spectrometry and mass spectrometry. Continued efforts to observe CH/sub 2/('B/sub 1/) ..-->.. CH/sub 2/ (A'/sub 1/) luminescence from photolysis of ketene, diazomethane and diazirine were unsuccessful. Investigation of the reactions of methylene by flash photolysis with time resolved mass spectrometry have been undertaken.
- Research Organization:
- Minnesota Univ., Minneapolis (USA). Dept. of Chemical Engineering and Materials Science
- OSTI ID:
- 5528443
- Report Number(s):
- COO-2026-39
- Country of Publication:
- United States
- Language:
- English
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