Photochemical modulation spectroscopy of oxygen atom reactions with olefins
作者： H.E. Hunziker , H. Kneppe , H.R. Wendt
DOI: 10.1016/0047-2670(81)85380-4
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摘要: Abstract We used photochemical modulation spectroscopy to study the primary radical products of oxygen atom—olefin reactions by their optical absorption. In contrast with earlier work done mass spectrometric sampling we found that “vinoxy” CH2CHO is an important product ethylene and monosubstituted ethylenes. characterized two electronic transitions this origins at 347.7 1249 nm estimated yields HCO in atom comparison reference unit quantum yield. Two sources formation were identified: a pressure-independent pathway pressure-dependent mechanism which complements stabilization epoxides aldehydes. Mercury-photo-sensitized decomposition corresponding also produces large CH2CHO. Our observations fragmentation forming link together early similar Cvetanovic recent low pressure flow molecular beam experiments several groups. A accounts for different characteristics pathways discussed.
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