title: Enantiopure, monodisperse alleno-acetylenic cyclooligomers: effect of symmetry and conformational flexibility on the chiroptical properties of carbon-rich compounds.
abstract: A series of enantiopure, monodisperse alleno-acetylenic cyclooligomers were synthesized. The single-crystal X-ray structures of the cyclic trimer and hexamer were resolved, providing insights into the symmetry of these molecules. Electronic circular dichroism (ECD), optical rotatory dispersion (ORD), Raman spectroscopy, and vibrational circular dichroism (VCD) data were analyzed with the aid of theoretical calculations. This multidimensional approach ultimately provided general guidelines that are useful for designing carbon-rich compounds with intense chiroptical properties.
authors.affiliation: Laboratorium für Organische Chemie, ETH Zürich, Zürich, Switzerland.
authors.forename: Pablo
authors.initials: P
authors.lastname: Rivera-Fuentes
authors.forename: Belén
authors.initials: B
authors.lastname: Nieto-Ortega
authors.forename: W Bernd
authors.initials: WB
authors.lastname: Schweizer
authors.forename: Juan T López
authors.initials: JT
authors.lastname: Navarrete
authors.forename: Juan
authors.initials: J
authors.lastname: Casado
authors.forename: François
authors.initials: F
authors.lastname: Diederich