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![[Figure 2]](sk1802fig2mag.jpg)
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Figure 2
Part of the crystal structure of (I), showing the formation of a [100] chain of rings built from piperazinedione molecules only. For clarity, H atoms bonded to C atoms have been omitted. Atoms marked with an asterisk (*), a hash (#) or a dollar sign ($) are at the symmetry positions (2 − x, −y, 1 − z), (1 − x, −y, 1 − z) and (−1 + x, y, z), respectively. |
![[Figure 2]](sk1802fig2.jpg)
 | STRUCTURAL CHEMISTRY |
ISSN: 2053-2296
