New Chiral Ligands Based on Substituted Heterometallocenes

Calmuschi-Cula, A. Salzer, V. Groehn,/. Organomet. Chem. 2006, 691, 2263. 

Chapuis, M. Barthe, J. Y. de Saint Laumer, Helv. Chim. Acta 2001, 84, 

Grosse-Boewing, Diploma Thesis, RWTH Aachen, 2002. 

Bayersdorfer, B. Ganter, U. Englert, W. Keim, D. Vogt,/. Organomet. Chem. 1998, 552, 187. 

In recent years we have developed a new type of planar-chiral ligand system which is based on a phosphaferrocene skeleton equipped with an additional donor function Y [8]. This structure is closely related to the well-known ferrocene-type ligands in that a CH unit of the latter has been replaced by a P atom. The phosphaferrocene moiety serves as both a chiral metallocene-type backbone and as a donor group via the phosphorus atom lone pair. These new ligands are unique in their topological architecture and show interesting ligand properties. 

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