Determination of enthalpies of formation of energetic molecules with composite quantum chemical methods
Journal Article
·
· Chemical Physics Letters
- Lawrence Livermore National Lab. (LLNL), Livermore, CA (United States)
We report gas-phase enthalpies of formation for the set of energetic molecules NTO, DADE, LLM-105, TNT, RDX, TATB, HMX, and PETN using the G2, G3, G4, and ccCA-PS3 quantum composite methods. Calculations for HMX and PETN hitherto represent the largest molecules attempted with these methods. G3 and G4 calculations are typically close to one another, with a larger difference found between these methods and ccCA-PS3. Furthermore there is significant uncertainty in experimental values, the mean absolute deviation between the average experimental value and calculations are 12, 6, 7, and 3 kcal/mol for G2, G3, G4, and ccCA-PS3, respectively.
- Research Organization:
- Lawrence Livermore National Laboratory (LLNL), Livermore, CA (United States)
- Sponsoring Organization:
- USDOE
- Grant/Contract Number:
- AC52-07NA27344
- OSTI ID:
- 1245711
- Report Number(s):
- LLNL-JRNL--680299
- Journal Information:
- Chemical Physics Letters, Journal Name: Chemical Physics Letters Journal Issue: C Vol. 648; ISSN 0009-2614
- Publisher:
- ElsevierCopyright Statement
- Country of Publication:
- United States
- Language:
- English
Chemical kinetics analysis of two C5-perfluorinated ketone (C5 PFK) thermal decomposition products: C 4 F 7 O and C 3 F 4 O
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