'HOT' RADICAL REACTIONS IN FLASH PHOTOLYSIS.
Final annual rept.,
CARNEGIE INST OF TECH PITTSBURGH PA
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The flash photolysis of hydrogen iodide in the presence of perdeutero-hydrocarbons was found to yield H2 and HD. The results were subjected to kinetic analysis. uthe effects of inert gas moderators were studied obtainng an indication of the extent to which non reactive collisions between hot hydrogen atoms and these hydrocarbons are inelastic. The results obtained are consistant with those obtained in low intensity studies. The Hgtriplet-P1 photosensitized decomposition of GeH4 appears to proceed by rupture of a Ge-H bond. The H atoms formed in the primary process were found to be unscavengeable by 5 added propylene. It is proposed that the abstraction reaction, HGeH4 to H2GeH3, is very rapid andor that the hydrogen atoms formed in the primary process carry some of the excess energy of the reaction. The rapid consumption of higher hydrides of germanium is partly attributed to their reactions with germyl radicals. The flash photolysis of methyl iodide was found to yield methane, ethane, ethylene, acetylene and iodine. The major mechanism of methane formation changes from low to high intensity increasing the quantum yield for methane production from 0.02 to 0.15. Author
- Inorganic Chemistry
- Radiation and Nuclear Chemistry