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Figure 8
Selected database survey entries: substructure (14) was the basis of the survey. The di­imide (15) has been reported several times as a ligand. The coumarin-derived double adduct (16) is the only entry that is spiro-fused to a six-membered ring.

Journal logoCRYSTALLOGRAPHIC
COMMUNICATIONS
ISSN: 2056-9890
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