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Título: | Comparative investigation of pure and mixed rare gas atoms on coronene molecules |
Autor: | Rodríguez-Cantano, Rocío CSIC; Bartolomei, Massimiliano CSIC ORCID ; Hernández, Marta I. CSIC ORCID; Campos-Martínez, José CSIC ORCID; González-Lezana, Tomás CSIC ORCID ; Villarreal, Pablo CSIC ORCID; Pérez de Tudela, Ricardo CSIC ORCID; Pirani, Fernando; Hernández-Rojas, Javier; Bretón, José | Fecha de publicación: | 18-ene-2017 | Editor: | American Institute of Physics | Citación: | Journal of Chemical Physics 146: 034302 (2017) | Resumen: | Clusters formed by the combination of rare gas (RG) atoms of He, Ne, Ar, and Kr on coronene have been investigated by means of a basin-hopping algorithm and path integral Monte Carlo calculations at T = 2 K. Energies and geometries have been obtained and the role played by the specific RG-RG and RG-coronene interactions on the final results is analysed in detail. Signatures of diffuse behavior of the He atoms on the surface of the coronene are in contrast with the localization of the heavier species, Ar and Kr. The observed coexistence of various geometries for Ne suggests the motion of the RG atoms on the multi-well potential energy surface landscape offered by the coronene. Therefore, the investigation of different clusters enables a comparative analysis of localized versus non-localized features. Mixed Ar-He-coronene clusters have also been considered and the competition of the RG atoms to occupy the docking sites on the molecule is discussed. All the obtained information is crucial to assess the behavior of coronene, a prototypical polycyclic aromatic hydrocarbon clustering with RG atoms at a temperature close to that of interstellar medium, which arises from the critical balance of the interactions involved. Published by AIP Publishing. | Descripción: | 10 pags., 6 figs., 4 tabs. | Versión del editor: | http://dx.doi.org/10.1063/1.4973890 | URI: | http://hdl.handle.net/10261/154934 | DOI: | 10.1063/1.4973890 | Identificadores: | doi: 10.1063/1.4973890 issn: 0021-9606 |
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