Figure 6
Stereoviews of parts of the crystal structure of (IX) showing (a) the formation of a chain of rings along (0.5, y, 0.75) built from only two of the four molecules; and (b) the formation of a chain along (1, y, 0.75) containing all four of the independent molecules. For the sake of clarity the H atoms not involved in the motifs shown have been omitted. |