Figure 1
The structure of (I), showing the atom-numbering scheme and 30% probability displacement ellipsoids. H atoms have been omitted for clarity. [Symmetry codes: (i) −x, y, −z + ; (ii) −x, −y, −z + 1; (iii) −x, −y + 1, −z + 1; (iv) −x + , −y + , −z + 1; (v) x, −y + 1, z − .] |