Abstract
The synthesis of chiral tetradentate dianionic diamine-diolate ligands assembled around either N,N′-dimethyl-frans-1,2-diaminocyclohexane or 2,2′-bipyrrolidine is described. These ligands wrap in a fac-fac helical mode around octahedral titanium and zirconium centers giving chiral-at-metal complexes. Diaminocyclohexane was found to be a poor chiral motif for diastereoselective helical wrapping, and all complexes of this family were obtained as mixtures of stereoisomers. In contrast, bipyrrolidine was found to be a perfect chiral motif for helical wrapping, and the corresponding diamine-diolate complexes were obtained as (enantiomerically pure) single diastereomers.
Original language | English |
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Pages (from-to) | 8075-8077 |
Number of pages | 3 |
Journal | Inorganic Chemistry |
Volume | 48 |
Issue number | 17 |
DOIs | |
State | Published - 7 Sep 2009 |