(Z)-2-(1-Phenylsulfonyl-1H-indol3-ylmethylene)-1-azabicyclo[2.2.2] -octan-3-one and (Z)-(S)-2-(1-phenylsulfonyl-1H-indol-3-ylmethylene)-1-azabicyclo[2.2.2] octan-3-ol

The title compounds C₂₂H₂₀N₂O ₃S, (I) and C₂₂H₂₂N₂O₃S, (II), crystallize in space groups were studied. It was observed that the molecules of (I) displacement ellipsoids were drawn at the 50% probability level and H atoms were omitted for clarity. The molecules of (II) displacement ellipsoids were drawn at the 50% probability level and H atoms, except that linked to atom O18, were omited for clarity. The study confirms the molecular structure and atom connectivity for (I) and (II) with the help of x ray analysis.