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  • 1
    Electronic Resource
    Electronic Resource
    An Orange Form of Coumarin 314 (1996)
    Oxford [u.a.] : International Union of Crystallography (IUCr)
    Acta crystallographica 52 (1996), S. 395-397 
    Details
    ISSN: 1600-5759
    Source: Crystallography Journals Online : IUCR Backfile Archive 1948-2001
    Topics: Chemistry and Pharmacology , Geosciences , Physics
    Notes: A new form of the title compound, ethyl 2,3,6,7-tetrahydro-11-oxo-1H, 5H, 11H-[1]benzopyrano[6,7,8-ij]quinolizine-10-carboxylate, C18H19NO4, was recrystallized from ethanol and is orange in colour. The coumarin moiety is planar and the conformation of the ethoxycarbonyl group is different from that of the yellow form. One of the piperidine rings is disordered and the N atom is in a planar configuration. The crystal packing is governed by van der Waals interactions.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1107/S010827019501239X
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