Figure 3
The molecular structure of (III), with the atom-numbering scheme. Displacement ellipsoids are drawn at the 30% probability level and H atoms are shown as small spheres of arbitrary radii. Numerical data refer to the internal torsion angles (°) of the individual rings (s.u. values vary between 0.1 and 0.3°). The intramolecular C—H⋯O short contact is shown as a dashed line. |