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Figure 2
The crystal packing of (a) (I)[link] and (b) (II)[link]. Hydrogen bonds are shown as dashed lines. H atoms not involved in strong hydrogen bonds have been omitted for clarity and the colour coding is as in Fig. 1[link]. Voids in (b) were calculated using Mercury (Macrae et al., 2008BB13), with a 1.2 Å probe radius and a 0.5 Å grid spacing. There are no voids in the structure of (I)[link].

Journal logoSTRUCTURAL
CHEMISTRY
ISSN: 2053-2296
Volume 69| Part 6| May 2013| Pages 647-650
doi:10.1107/S0108270113011852
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