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The comparison revealed major discrepancies in thermochemical data of species like allyloxy cyanide,\n                    <jats:italic>cis<\/jats:italic>\n                    \u2010formimidoyl, cyanomethylidyne, cyano\u2010propen\u20102yl radical, cyano\u2010propen\u20104yl radical, carbonyl cyanide, and propionitrile primary radical. The effects of the thermochemical data computed in this work on the performance of Pelucchi et al. (Energy &amp; Fuels, 2021) and Konnov et al. (Proceedings of the Combustion Institute, 2024) mechanisms were assessed. It was found that the updated thermochemical data improved the mole fraction predictions of certain species (e.g., hydrogen cyanide and acetylene) during the pyrolysis of pyrrole. However, an opposite trend of predictive performance deterioration was observed for species like acetonitrile during both pyrolysis and combustion (\u2009=\u20090.5, 1, and 2) of pyrrole. In some cases, one model\u2019s performance improved, whereas the other\u2019s deteriorated. Therefore, this study reveals the significance of simultaneously improving the accuracy of both thermodynamic and reaction parameters of future pyrrole combustion chemistry models.\n                  <\/jats:p>","DOI":"10.1002\/cphc.70563","type":"journal-article","created":{"date-parts":[[2026,9,21]],"date-time":"2026-09-21T02:27:32Z","timestamp":1789957652000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":0,"title":["The Importance of Thermodynamic Data for Pyrrole Pyrolysis and Combustion Chemistry"],"prefix":"10.1002","volume":"27","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7980-8341","authenticated-orcid":false,"given":"Atmadeep","family":"Bhattacharya","sequence":"first","affiliation":[{"name":"Department of Energy and Mechanical Engineering Aalto University School of Engineering  Espoo 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