Figure 3
The structure of (II), showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 40% probability level. N and O atoms are shaded grey and dashed lines indicate hydrogen bonding. [Symmetry codes: (i) −x, y, −z + 1; (ii) −x + 1, y, −z + 3; (iii) −x, y, −z; (iv) −x + 1, y, −z + 2.] |