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Figure 4
The equivalent part of the three-dimensional hydrogen-bonding network in the plate crystals, viewed approximately parallel to a and showing one turn of the helix (starting from the mol­ecule with symmetry code i). In strict a-axis projection, the sides of the helix form an almost square lozenge. Mol­ecules labelled 1 and 2 are described in the Comment. [Symmetry codes: (i) x − 1, y, z; (ii) x, y + 1, z; (iii) x − [{1\over 2}], −y + [{1\over 2}], −z + 1; (iv) x − [{1\over 2}], −y + [{3\over 2}], −z + 1.]

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 63| Part 1| December 2007| Pages o7-o10
doi:10.1107/S0108270106048591
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