The reaction of CH2(X̄3B1) with C6H6
T. Böhland
Max-Planck-Institut für Strömungsforschung, Bunsenstraße 10, D-3400 Göttingen, West-Germany
Search for more papers by this authorK. Héberger
Max-Planck-Institut für Strömungsforschung, Bunsenstraße 10, D-3400 Göttingen, West-Germany
Central Research Institute for Chemistry of the Hungarian Academy of Sciences, Pusztaszeri ut 59–67, H-1025 Budapest, Hungary.
Search for more papers by this authorF. Temps
Max-Planck-Institut für Strömungsforschung, Bunsenstraße 10, D-3400 Göttingen, West-Germany
Search for more papers by this authorH. Gg. Wagner
Max-Planck-Institut für Strömungsforschung, Bunsenstraße 10, D-3400 Göttingen, West-Germany
Search for more papers by this authorT. Böhland
Max-Planck-Institut für Strömungsforschung, Bunsenstraße 10, D-3400 Göttingen, West-Germany
Search for more papers by this authorK. Héberger
Max-Planck-Institut für Strömungsforschung, Bunsenstraße 10, D-3400 Göttingen, West-Germany
Central Research Institute for Chemistry of the Hungarian Academy of Sciences, Pusztaszeri ut 59–67, H-1025 Budapest, Hungary.
Search for more papers by this authorF. Temps
Max-Planck-Institut für Strömungsforschung, Bunsenstraße 10, D-3400 Göttingen, West-Germany
Search for more papers by this authorH. Gg. Wagner
Max-Planck-Institut für Strömungsforschung, Bunsenstraße 10, D-3400 Göttingen, West-Germany
Search for more papers by this authorAbstract
The kinetics of the reaction CH2(X̄3B1) + C6H6 → products (1) has been studied in a discharge flow reactor using Laser Magnetic Resonance (LMR) detection for CH2. The experiments yielded the overall rate constant kexp1 = (4.7 ± 2.4) · 10t3 exp(−(37.5 ± 2.4) kJ mol−1/RT) in the temperature range 448 K ≦T ≦ 683 K. The product formation was investigated for reaction (1) as well as the corresponding reaction CH2(ã1A1) + C6H6 → products (2) in a stationary photolysis reactor employing gas chromatographic analysis by photolyzing mixtures of CH2CO and C6H6 at λ1 = 366 nm and λ2 = 313 nm. The relative yields of the products cycloheptatriene (CHT) and toluene (T) were found to depend on the wavelength, [T]/([CHT] + [T]) = (0.13 ± 0.02) and (0.23 ± 0.02) at λ1, and λ2, respectively. The implications of these results and the mechanisms are discussed.
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