Figure 5
Views of the two diastereoisomers of (5b) disordered over the same crystallographic site with almost equal occupation. The atom-labelling scheme is shown for (a) the 6R,12S diastereoisomer and (b) the 6R,12R diastereoisomer (the enantiomers of these molecules are also present in this centrosymmetric structure). Displacement ellipsoids are drawn at the 50% probability level. Most H atoms and the minor-disorder conformations of the benzyl groups have been omitted for clarity. |