Combustion, Explosion, and Shock Waves

, Volume 54, Issue 1, pp 9–15 | Cite as

Quantum-Chemical Calculations of the Primary Reactions of Thermal Decomposition of Cyclopentadienone

  • A. R. GhildinaEmail author
  • A. M. Mebel
  • I. A. Medvedkov
  • V. N. Azyazov


The geometric structures, vibration frequencies, and energies of the reactants, products, and transition states in the decomposition of C5H4O were evaluated by quantum chemical calculations using the CCSD(T)-F12/vtz-f12B method. The calculated energy barriers for the two most probable pyrolysis pathways of C5H4O, equal to 96.3 and 96.5 kcal/mol, respectively, are evidence that the pyrolysis proceeds at a high temperature, and the most likely reaction products are vinylacetylene and carbon monoxide. It is shown that the formation of products such as cyclobutadiene, acetylene, and propadienal can be explained by the occurrence of an energetically favorable pathway.


combustion pyrolysis polycyclic aromatic hydrocarbons cyclopentadienone vinylacetylene acetylene propadienal reaction pathway density functional method ab initio method 


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Copyright information

© Pleiades Publishing, Ltd. 2018

Authors and Affiliations

  • A. R. Ghildina
    • 1
    • 2
    Email author
  • A. M. Mebel
    • 3
  • I. A. Medvedkov
    • 1
  • V. N. Azyazov
    • 1
    • 2
  1. 1.Korolev Samara National Research UniversitySamaraRussia
  2. 2.Samara Department of the Lebedev Physical InstituteRussian Academy of SciencesSamaraRussia
  3. 3.Florida International UniversityMiamiUSA

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