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Figure 7
Part of the crystal structure of compound (Ib)[link] showing the formation of a hydrogen-bonded chain of spiro-fused rings running parallel to the [001] direction. Hydrogen bonds are drawn as dashed lines and, for the sake of clarity, the H atoms which are bonded to C atoms have been omitted.

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
Volume 77| Part 4| April 2021| Pages 335-340
https://doi.org/10.1107/S2056989021002310
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