title: Bimetallic Gold(I) Complexes with Ethynyl-Helicene and Bis-Phosphole Ligands: Understanding the Role of Aurophilic Interactions in their Chiroptical Properties.
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 Au(I) d(10) 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 Au(I) -Au(I) interactions in 2 a,b.
authors.affiliation: Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS-Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France.
authors.forename: Mehdi
authors.initials: M
authors.lastname: El Sayed Moussa
authors.affiliation: College of Chemistry and Molecular Engineering, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province, Zhengzhou University, Zhengzhou, 450001, P.R. China.|Institute of Chemistry Henan, Academy of Sciences, Zhengzhou, 450002, P.R. China.
authors.forename: Hui
authors.initials: H
authors.lastname: Chen
authors.affiliation: College of Chemistry and Molecular Engineering, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province, Zhengzhou University, Zhengzhou, 450001, P.R. China.
authors.forename: Zuoyong
authors.initials: Z
authors.lastname: Wang
authors.affiliation: Faculty of Chemistry, Jagiellonian University, R. Ingardena 3, 30-060, Krakow, Poland.
authors.forename: Monika
authors.identifier: http://orcid.org/0000-0003-4211-325X
authors.initials: M
authors.lastname: Srebro-Hooper
authors.affiliation: Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397, Marseille, France.
authors.forename: Nicolas
authors.initials: N
authors.lastname: Vanthuyne
authors.affiliation: Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS-Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France.
authors.forename: Soizic
authors.initials: S
authors.lastname: Chevance
authors.affiliation: Aix Marseille Université, Centrale Marseille, CNRS, iSm2 UMR 7313, 13397, Marseille, France.
authors.forename: Christian
authors.initials: C
authors.lastname: Roussel
authors.affiliation: Department of Chemistry, University of Durham, Durham, DH1 3LE, UK.
authors.forename: J A Gareth
authors.identifier: http://orcid.org/0000-0002-4688-3000
authors.initials: JA
authors.lastname: Williams
authors.affiliation: Department of Chemistry, University at Buffalo, State University of New York, Buffalo, NY 14260, USA. jochena@buffalo.edu.
authors.forename: Jochen
authors.initials: J
authors.lastname: Autschbach
authors.affiliation: Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS-Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France.
authors.forename: Régis
authors.initials: R
authors.lastname: Réau
authors.affiliation: College of Chemistry and Molecular Engineering, International Phosphorus Laboratory, International Joint Research Laboratory for Functional Organophosphorus Materials of Henan Province, Zhengzhou University, Zhengzhou, 450001, P.R. China. duanzheng@zzu.edu.cn.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Duan
authors.affiliation: Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS-Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France. christophe.lecop@univ-rennes1.fr.
authors.forename: Christophe
authors.initials: C
authors.lastname: Lescop
authors.affiliation: Institut des Sciences Chimiques de Rennes, UMR 6226, CNRS-Université de Rennes 1, Campus de Beaulieu, 35042, Rennes Cedex, France. jeanne.crassous@univ-rennes1.fr.
authors.forename: Jeanne
authors.identifier: http://orcid.org/0000-0002-4037-6067
authors.initials: J
authors.lastname: Crassous
keywords: aurophilic interactions; circular dichroism; gold; helicenes; phospholes