title: Dirhodium complexes: determination of absolute configuration by the exciton chirality method using VCD spectroscopy.
abstract: Inherently chiral dinuclear rhodium complexes have been synthesized from the well-known dirhodium(II)-acetate and chiral/achiral amino acids. These complexes have a twisted paddlewheel structure due to axial chirality. Chiral induction could be observed when the ligands were chiral, opposite to the case of achiral ligands, where a racemic mixture was formed. The racemic mixture was separated by chiral HPLC-ECD. The stereochemical properties of these complexes were determined by VCD spectroscopy supported by theoretical calculations at the DFT level. We present a simple route to determine the absolute configuration by an exciton chirality method using VCD spectroscopy.
authors.affiliation: Eötvös Loránd University, Institute of Chemistry, Budapest, Hungary. evass@chem.elte.hu.
authors.forename: Gábor
authors.initials: G
authors.lastname: Szilvágyi
authors.forename: Balázs
authors.initials: B
authors.lastname: Brém
authors.forename: Gábor
authors.initials: G
authors.lastname: Báti
authors.forename: László
authors.initials: L
authors.lastname: Tölgyesi
authors.forename: Miklós
authors.initials: M
authors.lastname: Hollósi
authors.forename: Elemér
authors.initials: E
authors.lastname: Vass