Unimolecular decomposition of cyclo-C4F8 induced by a CO2 tea laser
β Scribed by Jack M. Preses; Ralph E. Weston Jr.; George W. Flynn
- Publisher
- Elsevier Science
- Year
- 1977
- Tongue
- English
- Weight
- 633 KB
- Volume
- 46
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
Octafluorocyclobutane
has been shown to decompose clearly to tetrafluoroethylene when irmdidted at room temperature with 949 cm-' radiation from a pulsed CO2 laser. A calculation of the energy absorbed from the laser beam. combined with known unimolecular sate constants for the corre~on~mg thermal reaction, indicates that the thermal reaction cannot account for the observed product yields. ft is proposed that reaction of ~~ratio~a~y excited molecules is re~ponsibie for the observed reaction.
π SIMILAR VOLUMES
An infrared photochemical reaction of CzF,Cl induced by a TEA CO? hser was observed. &lain reaction products were C2F, and ClFC=CFCI(tzrcns). bemg quite different from those obtained by thermal or ultraviolet photochemical reactions.
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It has recently been suggested [ll that when l,l,l-trichloroethane is irradiated with a continuous-wave COP laser in the presence of SF6 sensitizer, the decomposition occurs in a molecular manner, viz. CH3CC13 4 CHZ = CCl2 + HC1 rather than by a radical-chain mechanism CHBCC13 CH3 -CC12 + C1 C1 + CH
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