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Figure 1
A view along the hydrogen-bond pattern formed by two coupled R33 (6) trimers in the low-temperature phase I of cyclopropylamine (de Boer et al., 1986BB21). The trimers are formed by long N—H6⋯N interactions (shown by the solid lines) and alternate trimers are rotated by 61.8° with respect to its neighbours. The trimers are bridged by shorter N—H7⋯N hydrogen bonds.

ISSN: 2052-5206
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