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Figure 1
Views of (a) (Ia), (b) (Ib), (c) (Ic) and (d) (Id), showing the atom-labelling schemes. Displacement ellipsoids are drawn at the 50% probability level and H atoms as spheres of arbitrary radii. Dashed lines indicate hydrogen-bond contacts.

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 64| Part 6| May 2008| Pages o330-o334
doi:10.1107/S0108270108013504
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