Acta Crystallographica Section E

Structure Reports Online

Volume 69, Part 7 (July 2013)

organic compounds

Acta Cryst. (2013). E69, o1130    [ doi:10.1107/S1600536813015833 ]

Ethyl 4-(2-eth­oxy-2-oxoeth­yl)-3-oxo-4,13-di­aza­penta­cyclo­[,11.05,10.014,19]henicosa-1,5(10),6,8,11,14(19),15,17,20-nona­ene-12-carboxyl­ate

Q.-H. Meng, Y.-N. Wu, K. Jiang and Y. Liu

Abstract: In the title compound, C26H22N2O5, the system consisting of five fused rings, being essentially planar with an r.m.s. deviation from the least-squares plane of 0.049 (3) Å, makes a dihedral angle of 58.72 (12)° with the plane of the ethyl carboxyl­ate group immediately attached to it, and a dihedral angle of 89.48 (14)° with the plane of the ethyl carboxyl­ate group attached via the -CH2- bridge. Bond lengths indicate [pi]-delocalization over the whole penta­cyclic system. The mol­ecular conformation is stabilized by a weak intra­molecular C-H...O hydrogen bond. In the crystal, mol­ecules form stacks along the b-axis direction, neighboring mol­ecules within each stack being related by inversion and the shortest distance between the centroids of the pyridine rings within the stack being 3.667 (2) Å.

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