Figure 1
The asymmetric unit of (I), showing the atomic numbering scheme. Displacement ellipsoids are shown at the 50% probability level. The H atoms on N1 and N2 are disordered and only one set is shown at each site. [Symmetry codes: (i) −x + 1, −y + 1, −z + 1; (ii) x, −y + , z.] |