Acta Crystallographica Section E (Feb 2010)

Diethyl 2-tert-butyl-4,11-dioxo-2,3-dihydro-cis-1H,5H,10H-2,3a,4a,10a,11a-pentaazabenzo[f]indeno[2,1,7-ija]azulene-11b,11c-dicarboxylate

  • Yanping Zhu,
  • Yichong Sun,
  • Mingqiang Qiu

DOI
https://doi.org/10.1107/S1600536810000097
Journal volume & issue
Vol. 66, no. 2
pp. o289 – o289

Abstract

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In the title molecule, C24H31N5O6, the two ethyl fragments are each disordered over two conformations [occupancy ratios 0.58 (13)/0.42 (13) and 0.56 (12)/0.44 (12)]. The crystal packing exhibits intermolecular non-classical C—H...O hydrogen bonds and π–π interactions between benzene rings [centroid–centroid distances = 3.836 (5) Å].