Formation of C9H2 and C10H2 from Reactions C3H + C6H2 and C4H + C6H2
| Autor: | Wen-Jian Huang, Shih-Huang Lee, Yi-Lun Sun |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
010304 chemical physics
Chemistry Radical Isotropy Degrees of freedom (physics and chemistry) Analytical chemistry chemistry.chemical_element Photoionization 01 natural sciences Synchrotron Spectral line law.invention law Ionization 0103 physical sciences Physical and Theoretical Chemistry 010303 astronomy & astrophysics Helium |
| Zdroj: | The Journal of Physical Chemistry A. 121:9687-9697 |
| ISSN: | 1520-5215 1089-5639 |
| Popis: | The reactions of C3H and C4H radicals with C6H2 were investigated for the first time. Reactants C3H, C4H, and C6H2 were synthesized in two beams of C2H2 diluted with helium by pulsed high-voltage discharge. We measured translational-energy distributions, angular distributions, and photoionization-efficiency spectra of C9H2 and C10H2 produced from the title reactions in a crossed molecular-beam apparatus using synchrotron vacuum-ultraviolet photoionization. The C3H (C4H) + C6H2 reaction releases 42% (33%) of available energy into the translational degrees of freedom of product C9H2 (C10H2) + H and scatters products into a nearly isotropic angular distribution. The photoionization-efficiency spectrum of C9H2 (C10H2) is in good agreement with that of C9H2 (C10H2) produced from the C7H (C8H) + C2H2 reaction. The ionization threshold, after deconvolution, was determined as 8.0 ± 0.1 eV for C9H2 and 8.8 ± 0.1 eV for C10H2. The combination of measurements of product translational-energy release and photoionizati... |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|