The reaction of CzF5 radicals with HzS (2) C2F5 + HzS -+ CzF5H + HS kfi was studied over the range 1"-123"C using CZFS radicals generated by photolysis of perfluoropropionic anhydride. The rate constant k~ for reaction (2) is given by where e = 2.303RT/cal mole-'. The relevance of this result to c
On the mechanism of the thermal F + C2H4 reaction. the molecular elimination of HF from chemically activated C2 H4F radicals
β Scribed by Xue Zhi-len; K. Tomiyoshi; C.A. Mathis; M.B. Knickelbein; J.W. Root
- Publisher
- Elsevier Science
- Year
- 1983
- Tongue
- English
- Weight
- 529 KB
- Volume
- 103
- Category
- Article
- ISSN
- 0009-2614
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β¦ Synopsis
The mcdprated nuclear recoil techmque has been used to investigate the gas-phase unimolecuhr reaction behavior of actwated C2H4 raF radwals produced by addrtron of thermal r8F atoms to C-, & _ At low pressures, these radicals dccompose both by H-atom loss and by molecular H'aF ehminatlon.
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Kinetic energy releases from the unimolecular 1~2 CD,) elimirzxtion reactions of energy-selected x 'Bag CzHz <CzDz) I~JW been obtsincd by a photoelectron-photoion coincidence technique\_ The energ\-releases susgest a 1.1 elimination and 3~ compatible xrith the presence of a small reverse activation
The distributions of relative translational energy released during (i) loss of H, from metastable CH,CHi' ions, (ii) loss of HD from metastable CH,CDl' ions and (iii) loss of D, from metastable CD,CDl' ions ?.ere measured. The relevant parts of the potential energy surface of the reaction C,H:' + C
The initial rates of formation of the major products in the thermal reactions of ethylene at temperatures in the neighborhood of 800 K have been measured in the presence and absence of the additives neopentane and ethane. It has been shown that in the absence of the additive the main initiation proc
The thermally induced decomposition of ethylene, C2H4, to acetylene, C2H2, on the Ni(111) surface has been treated theoretically: potential-energy curves were computed within a modified extended-Hi~ckel framework and reaction rates estimated via a master equation approach. As a preliminary step, ads