Acta Cryst. (2006). E62, o885-o887  [ doi:10.1107/S1600536806003175 ]

Ethyl 9-dicyanomethylene-2,5,7-trinitrofluorene-4-carboxylate

A. S. Batsanov and I. F. Perepichka

Abstract: The title compound, C₁₉H₉N₅O₈, has a warped fluorene ring system due to steric repulsion between the 4-ethoxycarbonyl and 5-nitro groups.

Online 3 February 2006

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