Figure 4
The structure of (II), showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 50% probability level. N atoms are shaded grey. [Symmetry codes: (i) x − 1, y, z; (ii) −x, −y + 2, −z; (iii) −x + 1, −y + 2, −z; (vi) −x + 1, −y + 1, −z + 1.] |