Nickel-Cornered Molecular Rectangles as Polycyclic Aromatic Hydrocarbon Receptors
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Otros documentos de la autoría: Martínez Agramunt, Víctor; Ruiz-Botella, Sheila; Peris, Eduardo
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Título
Nickel-Cornered Molecular Rectangles as Polycyclic Aromatic Hydrocarbon ReceptorsFecha de publicación
2017Editor
WileyISSN
0947-6539; 1521-3765Cita bibliográfica
MARTÍNEZ‐AGRAMUNT, Víctor; RUIZ‐BOTELLA, Sheila; PERIS, Eduardo. Nickel‐Cornered Molecular Rectangles as Polycyclic Aromatic Hydrocarbon Receptors. Chemistry-A European Journal, 2017, vol. 23, no 27, p. 6675-6681.Tipo de documento
info:eu-repo/semantics/articleVersión de la editorial
http://onlinelibrary.wiley.com/doi/10.1002/chem.201700703/abstract?systemMessage ...Versión
info:eu-repo/semantics/submittedVersionPalabras clave / Materias
Resumen
Two nickel-cornered organometallic metalla-rectangles containing a pyrene-linked-di-N-heterocyclic carbene have been prepared. The dimensions of one side of the rectangle were modulated by either using pyrazine or ... [+]
Two nickel-cornered organometallic metalla-rectangles containing a pyrene-linked-di-N-heterocyclic carbene have been prepared. The dimensions of one side of the rectangle were modulated by either using pyrazine or 4,4'-bipyridine. The two molecules were tested as hosts for the recognition of seven small polycyclic aromatic hydrocarbons (PAHs) in [D6 ]acetone. By using 1 H NMR spectroscopy titrations, it could be established that the host-guest stoichiometries of the inclusion complexes formed were 1:1 for the pyrazine-based host, and 1:2 for the host containing bipyridine, in accordance with the larger dimensions of the latter. The molecular structure of the inclusion complex consisting of the bipyridine-containing host and pyrene was determined by X-ray crystallography, which confirms the 1:2 host-guest stoichiometry of this species. The determination of the association constants indicate that the binding strengths are in the order: Perylene<naphthalene<phenanthrene<anthracene<pyrene<triphenylene, ranging from 130-4400 m-1 in the case of the smaller host, thus indicating that larger PAHs show higher binding strengths than smaller ones, except for the case of perylene, which exceeds the size for an optimum dimensional fitting within the cavity. As a proof of concept, the pyrazine host was used as a PAH-scavenger in heptane. [-]
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Chemistry-A European Journal, 2017, vol. 23, no 27Proyecto de investigación
MEC of Spain / CTQ2014-51999-P; Universitat Jaume I / P11B2014-02; Generalitat ValencianaDerechos de acceso
Copyright © John Wiley & Sons, Inc
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