Acta Crystallographica Section E

Structure Reports Online

Volume 68, Part 11 (November 2012)

organic compounds

Acta Cryst. (2012). E68, o3204-o3205    [ doi:10.1107/S1600536812043383 ]

2-Cyano-3-(2,3,6,7-tetra­hydro-1H,5H-benzo[ij]quinolizin-9-yl)prop-2-enoic acid dimethyl sulfoxide monosolvate

H. Yennawar, G. He, C. Rumble and M. Maroncelli

Abstract: In dimethyl sulfoxide solvated 9-(2-carb­oxy-2-cyano­vin­yl)julolidine, C16H16N2O2·C2H6OS, the essentially planar -CH=(CN)-CO2H substituent (r.m.s. deviation = 0.014 Å) is almost coplanar with respect to the benzene ring, the dihedral angle between the two planes being 0.48 (2)°. The conformations of the fused, non-aromatic rings were found to be half-chair. In the crystal, the acid molecule forms a hydrogen bond to the O atom of the solvent mol­ecule. The acid mol­ecule is disordered over two positions with respect to the methyl­ene C atoms in a 1:1 ratio. The crystal studied was found to be a racemic twin.

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