Abstract
The contributions by the author's research group towards the preparation and the investigation of physical and chemical properties of optically active clusters are reviewed. Such clusters with EM 3 tetrahedrane frameworks can be prepared by stepwise synthesis or by metal exchange. Enantiomer separation is possible by means of optically active phosphine ligands via the intermediate formation of diastereomeric substitution derivatives or by means of chromatography on triacetyl cellulose. The optical properties of the diastereoisomers and the enantiomers (molar rotations, rotatory dispersion) are extreme. The optical activity of the clusters containing light transition elements is lost in the presence of donor ligands (CO, phosphines, catalysis substrates) due to the opening of metalmetal bonds. Reactions in the ligand sphere, however, can be performed with up to 100% diastereoselectivity.
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
