%0 Journal Article
%T 8,8-Dimethyl-8,9-dihydro-7H-chromeno[2,3-b]quinoline-10,12-dione
%A Thothadri Srinivasan
%A Panneerselvam Yuvaraj
%A Boreddy S. R. Reddy
%A Devadasan Velmurugan
%J Acta Crystallographica Section E
%D 2013
%I International Union of Crystallography
%R 10.1107/s1600536813001050
%X In the title compound, C18H15NO3, the fused benzopyran and pyridine rings are essentially coplanar [r.m.s. deviation = 0.0533   with a maximum deviation of 0.080 (1)   for a benzene C atom]. The cyclohexanone ring adopts an envelope conformation with the dimethyl-substituted C atom 0.660 (2)   out of the plane formed by the remaining ring atoms (r.m.s. deviation = 0.0305  ). The dihedral angle between the mean planes of the pyran and cyclohexanone rings is 12.95 (6)¡ã. In the crystal, molecules are linked via C¡ªH...O hydrogen bonds, leading to chains running along [011].
%U http://scripts.iucr.org/cgi-bin/paper?S1600536813001050