Figure 9
Part of the crystal structure of (I)[link], showing the formation of a hydrogen-bonded [010] chain generated by a screw axis. For clarity, H atoms not involved in the motifs shown have been omitted. Atoms marked with an asterisk (*), a hash (#) or a dollar sign ($) are at the symmetry positions ([{3\over 2}] - x, -[{1\over 2}] + y, [{3\over 2}] - z), (x, -1 + y, z) and ([{3\over 2}] - x, [{1\over 2}] + y, [{3\over 2}] - z), respectively.  [article HTML]

© International Union of Crystallography 2005