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-L-prolinato-iridium) Tris(trifluoromethanesulfonate) with Chiral Self Recognition

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Metal Complexes of Biologically Important Ligands, CVII [1].

Formation of Tris(pentamethylcyclopentadienyl-

-L-prolinato-iridium) Tris(trifluoromethanesulfonate) with Chiral Self Recognition

Karlheinz S¨unkel, Winfried Hoffm¨uller, Wolfgang Beck*

Institut f¨ur Anorganische Chemie der Ludwig-Maximilians-Universit¨at, Meiserstr. 1, D-80333 M¨unchen

Dedicated to Professor Warren Roper on the occasion of his 60thbirthday Z. Naturforsch.53 b,1365–1368 (1998); received May 20, 1998

Pentamethylcyclopentadienyl, Iridium, Prolinate

The structure of the title complex consists of [Ir3(C5Me5)3(L-prolinate)3]3+complex cations and CF3SO3 anions. Each iridium atom is coordinated in a distorted tetrahedral manner by one cyclopentadienyl group, two carboxylate O atoms and the prolinate N atom. The iridium atoms are bridged by the carboxylate groups. Each of the three stereogenic iridium atoms has the same (S) configuration, i. e. the trimerization of the [Ir(C5Me5)(L-prolinate)]+ fragment occurs with chiral self recognition.

* Reprint requests to Prof. W. Beck; E-mail: wbe@anorg.chemie.uni-muenchen.de

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