Fig. 3. Molecular structures of 1 (A), 2 (B) with molecular packing (C), (S,S)-3 ((D), one of two independent molecules in the asymmetric unit) and 8a (E) in the solid state ((A, B, D and E) displacement ellipsoids are shown at the 50% probability level; hydrogen atoms, solvent molecules, and disordered atoms are omitted for clarity).
