ReactionMechanismGenerator / ReactionMechanismGenerator/RMG-database

O=C=C=C=O thermo

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Topic: Thermo
Dominant language
Python
Stars
127
Forks
160
Avg merge
6d 2h
Merged PRs (30d)
2

Description

Thermo group additivity estimation for O=C=C=C=O (https://rmg.mit.edu/database/thermo/molecule/1%20O%20u0%20p2%20c0%20%7B2,D%7D%0A2%20C%20u0%20p0%20c0%20%7B1,D%7D%20%7B3,D%7D%0A3%20C%20u0%20p0%20c0%20%7B2,D%7D%20%7B4,D%7D%0A4%20C%20u0%20p0%20c0%20%7B3,D%7D%20%7B5,D%7D%0A5%20O%20u0%20p2%20c0%20%7B4,D%7D%0A)

is significantly off from ATcT (https://atct.anl.gov/Thermochemical%20Data/version%201.122p/species/?species_number=279).

H298 from GAV is +34 kcal/mol and ATcT H298 is -22 kcal/mol.

We can add O=C=C=C=O to a thermo library (perhaps primaryThermoLibrary), but we should look into thermo groups more closely to see if this error is systematic for these types of molecules

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First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start with the linked RMG thermo database entry for O=C=C=C=O and compare its group additivity estimate with the linked ATcT value. Determine whether the discrepancy is systematic for similar molecules; done means documenting the finding and deciding whether a thermo group or primaryThermoLibrary entry is needed.

Written by the indexing model from the issue text.

Assessment

Domain
databases
Issue type
Bug
Difficulty
4/5
Estimated time
3-5 days
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
32/100

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