Figure 3
Part of the crystal structure of the title compound, showing (a) the formation of `ladders' and (b) the relative conformation of the molecules in the `ladder' formed from the two hydrogen-bonded rings. Displacement ellipsoids are shown at the 50% probability level, H atoms are shown as circles of arbitrary radii and dashed lines indicate hydrogen bonds. [Symmetry code: (ii) −x + 1, −y, −z − 1.] |