Figure 5
A molecular diagram of (IIa), showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 30% probability level. H atoms have been omitted for clarity. Cg1, Cg2 and Cg3 denote ring centroids. Intramolecular interactions (P⋯O contacts and C—H⋯π bonds) are shown as dashed lines. |