Bimetallic Gold(I) Complexes with Ethynyl‐Helicene and Bis‐Phosphole Ligands: Understanding the Role of Aurophilic Interactions in their Chiroptical Properties |
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| Authors: | Dr. Mehdi El Sayed Moussa Dr. Hui Chen Zuoyong Wang Dr. Monika Srebro‐Hooper Dr. Nicolas Vanthuyne Dr. Soizic Chevance Prof. Christian Roussel Prof. J. A. Gareth Williams Prof. Jochen Autschbach Prof. Régis Réau Prof. Zheng Duan Dr. Christophe Lescop Dr. Jeanne Crassous |
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| Affiliation: | 1. Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS-Université de Rennes 1, Rennes Cedex, France;2. College of Chemistry and Molecular Engineering, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province, Zhengzhou University, Zhengzhou, P.R. China;3. Institute of Chemistry Henan, Academy of Sciences, Zhengzhou, P.R. China;4. Faculty of Chemistry, Jagiellonian University, Krakow, Poland;5. Aix Marseille Université, Centrale Marseille, CNRS, Marseille, France;6. Department of Chemistry, University of Durham, Durham, UK;7. Department of Chemistry, University at Buffalo, Buffalo, USA |
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| Abstract: | Monometallic gold(I)‐alkynyl‐helicene complexes ( 1 a , b ) and bimetallic gold(I)‐alkynyl‐helicene architectures featuring the presence ( 2 a , b ) or absence ( 3 a , b ) of aurophilic intramolecular interactions were prepared by using different types of phosphole ligands (mono‐phosphole L1 or bis‐phospholes L2 , 3 ). The influence of the AuI d10 metal center(s) on the electronic, photophysical, and chiroptical properties of these unprecedented phosphole‐gold(I)‐alkynyl‐helicene complexes was examined. Experimental and theoretical results highlight the importance of ligand‐to‐ligand‐type charge transfers and the strong effect of the presence or absence of AuI–AuI interactions in 2 a , b . |
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| Keywords: | aurophilic interactions circular dichroism gold helicenes phospholes |
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