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Título: | Supramolecular assembly of diplatinum species through weak PtII⋅⋅⋅PtII intermolecular interactions: A combined experimental and computational study |
Autor: | Pérez Paz, Alejandro CSIC ORCID; Espinosa Leal, Leonardo Ándres; Azani, Mohammad-Reza; Guijarro, Alejandro; Sanz Miguel, Pablo J. CSIC ORCID; Givaja, Gonzalo; Castillo, Óscar; Mas-Ballesté, Rubén; Zamora, Félix; Rubio, Angel CSIC ORCID | Palabras clave: | Supramolecular chemistry Platinum Metal–metal interactions Density functional calculations Computational chemistry |
Fecha de publicación: | 2012 | Editor: | Wiley-VCH | Citación: | Chemistry - A European Journal 18(43): 13787- 13799 (2012) | Resumen: | The present study elucidates the factors that govern the spontaneous self-assembly of a family of dimetal [Pt2L4] (L=dithiocarboxylato ligand) complexes. Experimental data show that variables such as temperature, concentration, solvent and the nature of the ligand L have a critical effect on the reversible self-assembly of supramolecular [Pt2L4]n entities. In solution, new UV/Vis spectroscopic features emerge at low temperatures and/or high concentrations, which are attributed to the formation of oligomeric [Pt2L4]n species. The description of intermolecular Pt⋅⋅⋅Pt interactions, the main driving force for the association, was addressed from a computational perspective. The contributions from intermolecular Pt⋅⋅⋅S and S⋅⋅⋅S interactions to these supramolecular assemblies were found to be repulsive. Experimental UV/Vis data have been interpreted by means of computational spectroscopy. | Versión del editor: | http://dx.doi.org/10.1002/chem.201201962 | URI: | http://hdl.handle.net/10261/95440 | DOI: | 10.1002/chem.201201962 | Identificadores: | doi: 10.1002/chem.201201962 issn: 1521-3765 e-issn: 1521-3765 |
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