Photodissociation of the vinyl radical (C2H3) via the first excited state: The C2H2(X̃1Σg+)+H channel
作者： Kesheng Xu , Jingsong Zhang
DOI: 10.1063/1.479680
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摘要: Photodissociation of C2H3 via its first excited A2A″ state is studied at 327.4 and 366.2 nm using high-n Rydberg-atom time-of-flight technique. C2H2(X1Σg+)+H product channel identified. Product translational energy distributions reveal two highly-inverted vibrational progressions C2H2(X1Σg+) (most likely C≡C stretch combination band with C–H bend). Anisotropic H-atom angular indicate a short lifetime respect to dissociation. D0(C2H2–H)=33.0±0.5 kcal/mol obtained.
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Charles D. Pibel, Andrew McIlroy, Craig A. Taatjes, Sterling Alfred, Katina Patrick, Joshua B. Halpern, The vinyl radical (Ã2A″←X̃2A′) spectrum between 530 and 415 nm measured by cavity ring-down spectroscopy Journal of Chemical Physics. ,vol. 110, pp. 1841- 1843 ,(1999) , 10.1063/1.477850
Musahid Ahmed, Darcy S. Peterka, Arthur G. Suits, The photodissociation of the vinyl radical (C2H3) at 243 nm studied by velocity map imaging Journal of Chemical Physics. ,vol. 110, pp. 4248- 4253 ,(1999) , 10.1063/1.478307
M. I. El Idrissi, J. Liévin, A. Campargue, M. Herman, THE VIBRATIONAL ENERGY PATTERN IN ACETYLENE (IV) : UPDATED GLOBAL VIBRATION CONSTANTS FOR 12C2H2 Journal of Chemical Physics. ,vol. 110, pp. 2074- 2086 ,(1999) , 10.1063/1.477817
Michael N. Paddon-Row, John A. Pople, Theoretical study of the ethenyl radical in the electronic ground and excited states The Journal of Physical Chemistry. ,vol. 89, pp. 2768- 2771 ,(1985) , 10.1021/J100259A014
Jeng-Han Wang, Hung-Chang Chang, Yit-Tsong Chen, Theoretical study of isomeric structures and low-lying electronic states of the vinyl radical C2H3 Chemical Physics. ,vol. 206, pp. 43- 56 ,(1996) , 10.1016/0301-0104(95)00441-6
Jingsong Zhang, Michael Dulligan, Curt Wittig, HNCO + h.nu.(193.3 nm) .fwdarw. H + NCO: Center-of-Mass Translational Energy Distribution, Reaction Dynamics, and D0(H-NCO) The Journal of Physical Chemistry. ,vol. 99, pp. 7446- 7452 ,(1995) , 10.1021/J100019A030
A. Sevin, H.T. Yu, E.M. Evleth, A theoretical analysis of the relative roles of ground and excited states in the bond rupture and hydrogen migration pathways in ethyl and vinyl radicals Journal of Molecular Structure-theochem. ,vol. 104, pp. 163- 178 ,(1983) , 10.1016/0166-1280(83)80015-3
David A. Blank, Weizhong Sun, Arthur G. Suits, Yuan T. Lee, Simon W. North, Gregory E. Hall, Primary and secondary processes in the 193 nm photodissociation of vinyl chloride Journal of Chemical Physics. ,vol. 108, pp. 5414- 5425 ,(1998) , 10.1063/1.475930
Hideki Katayanagi, Nobuaki Yonekuira, Toshinori Suzuki, C-BR BOND RUPTURE IN 193 NM PHOTODISSOCIATION OF VINYL BROMIDE Chemical Physics. ,vol. 231, pp. 345- 353 ,(1998) , 10.1016/S0301-0104(98)00085-8
A. H. H. Chang, A. M. Mebel, X.-M. Yang, S. H. Lin, Y. T. Lee, Ab initio/RRKM approach toward the understanding of ethylene photodissociation Journal of Chemical Physics. ,vol. 109, pp. 2748- 2761 ,(1998) , 10.1063/1.476877