|
Figure 3
Part of the three-dimensional hydrogen-bonding network in the needle crystals, viewed approximately parallel to a and showing one turn of the helix (starting from the molecule with symmetry code ii). Molecules labelled 1 and 2 are described in the Comment. [Symmetry codes: (i) x, y − 1, z; (ii) x − ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() ![]() |