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. 2013 Jun 22;69(Pt 7):o1130.
doi: 10.1107/S1600536813015833. eCollection 2013.

Ethyl 4-(2-eth-oxy-2-oxoeth-yl)-3-oxo-4,13-di-aza-penta-cyclo-[11.8.0.0(2,11).0(5,10).0(14,19)]henicosa-1,5(10),6,8,11,14(19),15,17,20-nona-ene-12-carboxyl-ate

Qing-Hua Meng  1 , Ya-Nan Wu, Ke Jiang, Yun Liu
Affiliations

Ethyl 4-(2-eth-oxy-2-oxoeth-yl)-3-oxo-4,13-di-aza-penta-cyclo-[11.8.0.0(2,11).0(5,10).0(14,19)]henicosa-1,5(10),6,8,11,14(19),15,17,20-nona-ene-12-carboxyl-ate

Qing-Hua Meng et al. Acta Crystallogr Sect E Struct Rep Online. .

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 carboxyl-ate group immediately attached to it, and a dihedral angle of 89.48 (14)° with the plane of the ethyl carboxyl-ate group attached via the -CH2- bridge. Bond lengths indicate π-delocalization over the whole penta-cyclic system. The mol-ecular conformation is stabilized by a weak intra-molecular C-H⋯O hydrogen bond. In the crystal, mol-ecules form stacks along the b-axis direction, neighboring mol-ecules 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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Figures

Fig. 1.
Fig. 1.
The molecular structure of the title molecule, showing the atom-labelling scheme. Displacement ellipsoids are drawn at the 50% probability level.
Fig. 2.
Fig. 2.
Packing diagram of the title compounds, viewed along the crystallographic c axis.
See this image and copyright information in PMC

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