Figure 1
(a) The structure of (I), showing the atom-numbering scheme and the methylene-group disorder between atoms C17 and C20; the C—C and C—H bonds of the minor contributor are shown as dashed lines. Displacement ellipsoids are drawn at the 30% probability level and H atoms are shown as small spheres of arbitrary radii. Parts (b) and (c) show the crystallographically independent molecules of (I) in the 130 K structure (Mudianta et al., 2010). |