C-3. Determining the Absolute Configuration (Λ or Δ) for a Metal Tris Chelate a-iii. Review of Method 1 As a review, on the top we show the Λ-Tris(acetonylacetonate)ruthenium(III) molecule Potenially useful commands Marion can wrap her fingers from back to front along a (any of the three) ligand backbone using her left hand with her thumb pointing towards you; therefore this is the Λ Isomer You have only one thing to Remember: Lambda = Left

On the bottom we show the Δ-Tris(acetonylacetonate)chromium(III) molecule Potentially Useful Viewing Commands: Marion can wrap her fingers from back to front along one (any of the three) ligand backbones using her right hand with her thumb pointing towards you; therfore this is the Δ Isomer.

Resources developed by Marion E. Cass, Carleton College and updated in 2014. Computations and content done in consultation with Henry S. Rzepa, Imperial College, London