Helicity Inversion in Lanthanide(III) Complexes with Chiral Nonaaza Macrocyclic Ligands

Giving lanthanides a new twist: The chiral nonaaza macrocycle L wraps tightly around lanthanide(III) ions in a helical fashion (see picture). The all-R enantiomer of the macrocycle, LRRRRRR, forms kinetically controlled complexation products of M helicity (100 % de), which undergo inversion to the P diastereomer (90 % de). Both products have been isolated in enantiopure form and structurally characterized. Supporting information for this article is available on the WWW under http://www.wiley-vch.de/contents/jc_2002/2006/z602464_s.pdf or from the author. Please note: The publisher is not responsible for the content or functionality of any supporting information supplied by the authors. Any queries (other than missing content) should be directed to the corresponding author for the article.