Figure 1
The structure of (I), showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 30% probability level. All H atoms have been omitted for clarity, except for the carboxylic acid H atom, which is shown as a small sphere of arbitrary radius. The dashed line indicates the intramolecular hydrogen bond. [Symmetry codes: (i) x + , −y + , z + ; (ii) x − 1, −y + 1, z − .] |