title: From hetero- to homochiral bis(metallahelicene)s based on a Pt(III)-Pt(III) bonded scaffold: isomerization, structure, and chiroptical properties.
abstract: Hetero- and homochiral diastereomeric bis(metallahelicene)s have been synthesized. They possess a rare Pt(III)-Pt(III) scaffold bridged by benzoato ligands. It is shown that heterochiral (P,M)-bis(Pt(III)-[6]helicene) can isomerize into the homochiral (P,P)- and (M,M)-bis(Pt(III)-[6]helicene). A theoretical study shows a unique σ-π conjugation between the two π-helices and the σ-Pt(III)-Pt(III) scaffold that impacts the strong chiroptical properties.
authors.affiliation: Sciences Chimiques de Rennes, UMR 6226, Institut de Physique de Rennes, UMR 6251, Campus de Beaulieu, CNRS-Université de Rennes 1, 35042 Rennes Cedex, France.
authors.forename: Emmanuel
authors.initials: E
authors.lastname: Anger
authors.forename: Mark
authors.initials: M
authors.lastname: Rudolph
authors.forename: Chengshuo
authors.initials: C
authors.lastname: Shen
authors.forename: Nicolas
authors.initials: N
authors.lastname: Vanthuyne
authors.forename: Loïc
authors.initials: L
authors.lastname: Toupet
authors.forename: Christian
authors.initials: C
authors.lastname: Roussel
authors.forename: Jochen
authors.initials: J
authors.lastname: Autschbach
authors.forename: Jeanne
authors.initials: J
authors.lastname: Crassous
authors.forename: Régis
authors.initials: R
authors.lastname: Réau