Hydrogen and halogen rearrangements in imidazoles: Hydrogen, fluorine, chlorine and bromine shifts
The structures and energetics of the minima and the transition states corresponding to the migration of hydrogen and halogen atoms (F, Cl, Br) in imidazole and in cyclopentadiene rings have been calculated using the composite method Gaussian-4 (G4), a quantum chemical method for the calculation of e...
| Autores: | , , |
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| Tipo de recurso: | artículo |
| Estado: | Versión publicada |
| Fecha de publicación: | 2024 |
| País: | España |
| Institución: | Consejo Superior de Investigaciones Científicas (CSIC) |
| Repositorio: | DIGITAL.CSIC. Repositorio Institucional del CSIC |
| OAI Identifier: | oai:digital.csic.es:10261/356515 |
| Acceso en línea: | http://hdl.handle.net/10261/356515 |
| Access Level: | acceso abierto |
| Palabra clave: | Halotropy prototropy haloimidazoles cyclopentadiene G4 calculations |
| Sumario: | The structures and energetics of the minima and the transition states corresponding to the migration of hydrogen and halogen atoms (F, Cl, Br) in imidazole and in cyclopentadiene rings have been calculated using the composite method Gaussian-4 (G4), a quantum chemical method for the calculation of energies of molecular species containing first-row, second-row, and third row main group atoms. The heats of formation obtained from the G4 values were found to be reliable by comparing them with the NIST Chemistry WebBook values of cyclopentadiene, imidazole and related compounds. The new G4 values thus obtained have been discussed using correlation analyses. In summary, this work was carried out because there is no clear evidence for intramolecular halogen migrations in azoles(Figure presented). |
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