Figure 1
The structures of segments of both independent chain, with the atom-numbering scheme. Displacement ellipsoids are drawn at the 50% probability level. Dashed lines indicate hydrogen bonds and H atoms are shown as small spheres of arbitrary radii. [Symmetry codes: (I) 2 − x, 2 − y, 1 − z; (II) 3 − x, 1 − y, 1 − z.] |