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Christine Höhn, Irene Keller, Lars Rohwer, Frank W. Heinemann and Ulrich Zenneck An Approach to Rigid, Optically Active Chelate Ligands with C2 Symmetry: Dialkylhexaphosphapentaprismanes European Journal of Inorganic Chemistry 2013

Version of Record online: 2 OCT 2013 | DOI: 10.1002/ejic.201300994

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The C2-symmetric ligand family R2-tBu4-hexaphosphapentaprismane binds PdII or PtII to form chiral cage complexes that fix the position of the metals. In contrast, the R groups are flexible and oriented above and below the molecular plane of the square-planar coordination sphere to fine tune the chemistry of the transition metals. Highly enriched diastereomers can be separated in up to 99 % de.

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