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The Structure of Nitro and Polynitropyrazoles: X-Ray Crystallography Versus Theoretical Calculations

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dc.contributor.authorClaramunt, Rosa M.
dc.contributor.authorPérez Torralba, Marta
dc.contributor.authorElguero, José
dc.contributor.authorAlkorta, Ibon
dc.date.accessioned2025-08-14T06:01:22Z
dc.date.available2025-08-14T06:01:22Z
dc.date.issued2025-07-31
dc.descriptionEsta es la versión aceptada para su publicación en Asian Journal of Organic Chemistry. 2025, e00400. La versión final publicada está disponible en: https://doi.org/10.1002/ajoc.202500400. This is the accepted version for publication in the Asian Journal of Organic Chemistry. 2025, e00400. The final published version is available at: https://doi.org/10.1002/ajoc.202500400.
dc.description.abstractThis publication presents the geometries of 157 nitro- and polynitropyrazoles. Among these, 109 compounds were theoretically studied using mainly the B3LYP/6–311++G(d,p) level of theory. Three-parameter Lee-Yang-Parr (B3LYP) is a density functional theory (DFT) method widely used in computational chemistry and constitutes an acceptable compromise for such a large set of compounds, some of them of considerable mass. The data set includes crystallographic parameters for 91 polynitropyrazoles; the remaining 67 compounds comprise 40 known and 27 newly reported structures. Several key issues are addressed: the investigation of 3,4-dinitro-1H-pyrazole, including nine X-ray structures (solvates and cocrystals); the prototropic tautomerism observed in four pairs of pyrazoles and the factors influencing the preference for a tautomer; the analysis of twelve 1-trinitromethyl-1H-pyrazoles; and a discussion of the detonation properties of 30 polynitro compounds. No previous work has included such a broad set of compounds. While comparing experimental data with theoretical calculations does not guarantee agreement in advance, in our case, the accordance regarding geometries is very good, except for some observed discrepancies. In the section on detonation properties, the consonance in terms of densities, planarity, and heats of formation is less strong but still sufficient to draw interesting conclusions.en
dc.description.versionversión final
dc.identifier.citationR. M. Claramunt, M. Pérez-Torralba, J. Elguero, I. Alkorta, Asian Journal of Organic Chemistry. 2025, e00400. https://doi.org/10.1002/ajoc.202500400
dc.identifier.doihttps://doi.org/10.1002/ajoc.202500400
dc.identifier.issn2193-5807; e-ISSN: 2193-5815
dc.identifier.urihttps://hdl.handle.net/20.500.14468/29894
dc.journal.titleAsian Journal of Organic Chemistry
dc.language.isoes
dc.publisherWiley
dc.relation.centerFacultad de Ciencias
dc.relation.departmentQuímica Orgánica y Bio-Orgánica
dc.rightsinfo:eu-repo/semantics/embargoedAccess
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.es
dc.subject23 Química
dc.titleThe Structure of Nitro and Polynitropyrazoles: X-Ray Crystallography Versus Theoretical Calculationsen
dc.typejournal articleen
dspace.entity.typePublication
relation.isAuthorOfPublicationbd6cfe0a-be8f-48cd-aac5-7c34967578e7
relation.isAuthorOfPublication6df40f1f-1bc5-4924-acea-8d4ec2f5e741
relation.isAuthorOfPublication.latestForDiscoverybd6cfe0a-be8f-48cd-aac5-7c34967578e7
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