Figure 1
A perspective view of one of the crystallographically independent molecules in (I), showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level. The suffix `A' denotes the symmetry operation (−x + 2, −y + 1, −z). Counter-ions and the minor disorder component in the =CH2 fragment have been omitted for clarity. H atoms are shown as small spheres of arbitrary radii. Intramolecular hydrogen bonds are shown as dashed lines. |