Chemistry is the experimental science by definition. We want to make observations to prove hypothesis. For this purpose, we perform experiments in the lab. , Safety of Benzyldiphenylphosphine, 7650-91-1, Name is Benzyldiphenylphosphine, molecular formula is C19H17P, belongs to chiral-phosphine-ligands compound. In a document, author is Zhu, Yanfei, introduce the new discover.
Enantioseparation of Au-20(PP3)(4)Cl-4 Clusters with Intrinsically Chiral Cores
Au-20(PP3)(4)Cl-4 (PP3=tris(2-(diphenylphosphino)ethyl) phosphine), abbreviated as Au-20, is the only Au nanocluster with an intrinsically chiral core without a chiral environment (chiral ligands or Au-thiolate staples), making it a unique object to understand chiral evolution and explore chiral applications. Unfortunately, the synthesized Au-20 is racemic, and its enantiomers have not yet been separated. Herein, we report a supramolecular assembly strategy with -cyclodextrin (-CD) to afford enantiopure Au-20 in bulk, and an enantiomer excess (ee) value of as-separated Au-20 of 97%. As a result of its high purity, the distinctive optical activity of Au-20, which originates from electronic transitions confined in chiral cores, is fully explored. Theoretical studies reveals that the enantioseparation results from the preferential self-assembly of -CD with organic ligands on the surface of right-handed Au-20.
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Reference:
Phosphine ligand,
,Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate