Download citation
Download citation
link to html
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.

Supporting information

cif

Crystallographic Information File (CIF)
Contains datablocks text, as1214a

CCDC reference: 126290

-1
Follow Acta Cryst. C
Sign up for e-alerts
Follow Acta Cryst. on Twitter
Follow us on facebook
Sign up for RSS feeds