We present that cationic rings could act as donor ligands thanks to suitably delocalized metal-metal bonds. This could grant to parent complexes the peculiar properties of aromatic rings crafted with main group elements. We assembled Pd nuclei into equilateral mono-cationic triangles with unhindered faces. Like their main-group element counterparts and despite their positive charge, these noble-metal rings form stable bonding interactions with other cations, as positively charged silver atoms, delivering the corresponding tetranuclear dicationic complexes. Through a mix of modeling and experimental techniques we propose that this bonding mode is an original coordination-like one rather than a 4-centres-2-electrons bond, which were already observed in three dimensional aromatics. Present results thus opens the way to the use of suitable metal rings as ligands for coordination chemistry and catalysis

All-Metal Aromatic Cationic Palladium Triangles Can Mimic Aromatic Donor Ligands towards Lewis Acidic Cations / Maestri, Giovanni; Wang, Yanlan; Monfredini, Anna; Deyris, Pierre Alexandre; Derat, Etienne; Malacria, Max; Blanchard, Florent. - In: CHEMICAL SCIENCE. - ISSN 2041-6520. - (2017). [10.1039/C7SC03475J]

All-Metal Aromatic Cationic Palladium Triangles Can Mimic Aromatic Donor Ligands towards Lewis Acidic Cations

MAESTRI, Giovanni;MONFREDINI, ANNA;
2017-01-01

Abstract

We present that cationic rings could act as donor ligands thanks to suitably delocalized metal-metal bonds. This could grant to parent complexes the peculiar properties of aromatic rings crafted with main group elements. We assembled Pd nuclei into equilateral mono-cationic triangles with unhindered faces. Like their main-group element counterparts and despite their positive charge, these noble-metal rings form stable bonding interactions with other cations, as positively charged silver atoms, delivering the corresponding tetranuclear dicationic complexes. Through a mix of modeling and experimental techniques we propose that this bonding mode is an original coordination-like one rather than a 4-centres-2-electrons bond, which were already observed in three dimensional aromatics. Present results thus opens the way to the use of suitable metal rings as ligands for coordination chemistry and catalysis
2017
All-Metal Aromatic Cationic Palladium Triangles Can Mimic Aromatic Donor Ligands towards Lewis Acidic Cations / Maestri, Giovanni; Wang, Yanlan; Monfredini, Anna; Deyris, Pierre Alexandre; Derat, Etienne; Malacria, Max; Blanchard, Florent. - In: CHEMICAL SCIENCE. - ISSN 2041-6520. - (2017). [10.1039/C7SC03475J]
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11381/2829560
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