Figure 3
The centrosymmetric dimer in the structure of (III), showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level and hydroxy H atoms are shown as small spheres of arbitrary radii. Hydrogen bonds are shown as dashed lines. H atoms not involved in hydrogen bonding have been omitted for clarity. [Symmetry code: (i) 2 − x, −y, 1 − z.] |