Figure 1
Part of the structure of (I), showing the atom-numbering scheme. Displacement ellipsoids are drawn at the 35% probability level. H atoms have been omitted for clarity. [Symmetry codes: (i) −x, y, −z + ; (ii) −x + 1, y, −z + ; (iii) x − 1, y, z; (iv) x + 1, y, z.] |