Desarrollo de compuestos de coordinación y organometálicos con capacidad de reconocimiento supramolecular
The research presented in this thesis dissertation includes the synthesis, development and study of a series of coordination and organometallic compounds with the ability to establish supramolecular interactions. Their characterization has been carried out by employing different techniques, in addit...
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| Tipo de recurso: | tesis doctoral |
| Estado: | Versión publicada |
| Fecha de publicación: | 2025 |
| País: | España |
| Institución: | Universidad de Valladolid |
| Repositorio: | UVaDOC. Repositorio Documental de la Universidad de Valladolid |
| OAI Identifier: | oai:uvadoc.uva.es:10324/75774 |
| Acceso en línea: | https://doi.org/10.35376/10324/75774 https://uvadoc.uva.es/handle/10324/75774 |
| Access Level: | acceso abierto |
| Palabra clave: | Interacciones supramoleculares Supramolecular Coordination Coordinación Organometallic Organometálico 23 Química |
| Sumario: | The research presented in this thesis dissertation includes the synthesis, development and study of a series of coordination and organometallic compounds with the ability to establish supramolecular interactions. Their characterization has been carried out by employing different techniques, in addition to the study of their properties and their capability to form supramolecular adducts with different systems. In Chapter I a family of Au(I) organometallic complexes is described. These complexes have two corannulene units, which can interact with fullerenes. Different diphosphine bridging ligands have been employed as spacers, which present different degree of rigidity. The most rigid ligands impose a geometry in which aurophilic interactions can be established, whereas in the complexes with flexible ligands the Au(I) centers are not that close. The impact of these interactions in the formation of supramolecular adducts with fullerenes has been assessed. In Chapter II two multitopic systems with several binding sites for fullerenes have been developed. One of the systems is based on bipyridyl Ru(II) complexes. The stoichiometry of the supramolecular adducts with fullerenes depends on the number of bipyridyl ligands with non-planar PAHs present on each complex. These complexes are cationic, and they have been prepared with different anions. The anion that provided the most solubility in a non-polar solvent was BArF4, which allowed the analysis of the supramolecular recognition events in these systems. However, a non-innocent behaviour of this anion was observed during the experiments, which showed a certain involvement in the process. The second system is based on Ru(II) porphyrin dimers. Two nitrogen bidentate ligands with different lengths have been employed as spacers between the porphyrins to evaluate their impact upon the adduct formation with fullerenes. Moreover, the geometry of these dimers allows the interaction with up to four fullerene molecules, which has been evaluated by fluorescence titration experiments. In Chapter III a family of homobimetallic Pt(II) complexes have been prepared with recognition motifs for cucurbit[8]uril. Spacer ligands with different geometries have been employed, and their supramolecular self-sorting equilibria have been analysed in aqueous medium in the presence of CB[8]. A model has been developed that allows to predict the behaviour of these equilibria using a simple geometric parameter as the difference between intramolecular Pt-Pt distances in each of the Pt(II) complexes. |
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