%0 Journal Article %T (Z)-Ethyl 2-oxo-3-(1,2-dihydroquinolin-2-ylidene)propanoate %A Arto Valkonen %A Erkki Kolehmainen %A Borys Oś %A miał %A owski %A Ryszard Gawinecki %J Acta Crystallographica Section E %D 2010 %I International Union of Crystallography %R 10.1107/s160053681002324x %X Both independent molecules in the asymmetric unit of the tautomeric title compound, C14H13NO3, a synthetic product obtained from 2-lithiomethylquinoline and diethyl oxalate, crystallize in the enaminone form with a Z configuration around the double bond. Intramolecular N¡ªH...O hydrogen bonds occur, generating an S(6) graph-set motif. In the crystal, weak intermolecular C¡ªH...O and ¦Ð¨C¦Ð stacking interactions [centroid¨Ccentroid distances = 3.7020 (14)¨C3.7429 (13) ] define a three-dimensional supramolecular network. %U http://scripts.iucr.org/cgi-bin/paper?S160053681002324X