Figure 4
The asymmetric unit of (III), showing the two symmetry-independent molecules and the water molecule. Displacement ellipsoids are drawn at the 50% probability level. The water molecule is disordered across a centre of symmetry. Both partially occupied carboxylic acid H-atom positions are shown on each molecule, with occupancies of 0.69 (3) for O1A and 0.5 for O1B (fixed by the disorder). |