150447 20251017144552.0 doi 10.1002/chem.201904507 sideral 116401 ART-2020-116401 eng Vellé, Alba (orcid)0000-0001-6028-5499 Enhanced metallophilicity in metal-carbene systems: stronger character of aurophilic interactions in solution 2020 Access copy available to the general public Unrestricted Metallophilicity is an essential concept that builds upon the attraction between closed shell metal ions. We report on the [M-2(bisNHC)(2)](2+) (M=Au-I, Ag-I; NHC=N-heterocyclic carbene) systems, which display almost identical features in the solid state. However, in solution the Au-2 cation exhibits a significantly higher degree of rigidity owed to the stronger character of the aurophilic interactions. Both Au-2 and Ag-2 cationic constructs are able to accommodate Ag+ ions via M-M interactions, despite their inherent Coulombic repulsion. When electrostatic repulsion between host and guest is partially diminished, M-M distances are substantially shortened. Quantum chemical calculations estimate intermetallic bond orders up to 0.2. Although at the limit of (or beyond) the van der Waals radii, metallophilic interactions are responsible for their behavior in solution. info:eu-repo/grantAgreement/ES/DGA-FSE/E42-17R info:eu-repo/grantAgreement/ES/MINECO/CTQ2017-89132-P info:eu-repo/grantAgreement/ES/UZ/UZ2018-CIE-06 info:eu-repo/semantics/openAccess All rights reserved http://www.europeana.eu/rights/rr-f/ 5.236 2020 CHEMISTRY, MULTIDISCIPLINARY 52 / 178 = 0.292 2020 Q2 T1 1.687 2020 Catalysis 2020 Q1 Organic Chemistry 2020 Q1 Chemistry (miscellaneous) 2020 Q1 info:eu-repo/semantics/article info:eu-repo/semantics/acceptedVersion Rodríguez-Santiago, Luis Sodupe, Mariona Sanz Miguel, Pablo J. Universidad de Zaragoza (orcid)0000-0002-8220-6031 2010 760 Universidad de Zaragoza Dpto. Química Inorgánica Área Química Inorgánica 26, 5 (2020), 997-1002 Chemistry (Weinh.) Chemistry - A European Journal 0947-6539 622536 http://zaguan.unizar.es/record/150447/files/texto_completo.pdf Postprint 1756207 http://zaguan.unizar.es/record/150447/files/texto_completo.jpg?subformat=icon icon Postprint oai:zaguan.unizar.es:150447 articulos driver 2025-10-17-14:12:03 ARTICLE