Figure 1
(a) The molecular structure of (I)-P21, showing the atom-numbering scheme adopted for both polymorphs. Displacement ellipsoids are drawn at the 50% probability level and H atoms are shown as small spheres of arbitrary radii. Disordered atoms have been omitted for clarity. (b) The disorder of atoms C20 and C20A, which each have an occupancy of 0.5; the second component is shown with an open bond. H atoms have been omitted for clarity. |