Figure 1
The asymmetric unit of (I), showing the three-center (donor bifurcated) C—H⋯(O,O) hydrogen-bond configuration. Hydrogen bonds (see Comment) are shown as dashed lines. The values given in the figure are the angles subtended at H72A, which participates in the bifurcated hydrogen bond. Displacement ellipsoids are drawn at the 30% probability level. |