Acta Cryst. (2006). E62, o4887-o4888  [ doi:10.1107/S1600536806040505 ]

Diethyl 4,10-dibromo-5,11-methano-6H,12H-dibenzo[b,f][1,5]diazocine-2,8-dicarboxylate

M. D. H. Bhuiyan, A. C. Try, J. Klepetko and P. Turner

Abstract: In the molecule of the title compound, C₂₁H₂₀Br₂N₂O₄, the 4,10-dibromo-2,8-diethyl ester analogue of Tröger's base, the diazocine bridge imparts a twist such that the two aryl rings are offset with respect to one another. A twofold rotation axis passes through the bridgehead C atom. The asymmetric unit contains only one-half molecule and the dihedral angle between the two symmetry-related benzene rings is 98.24 (4)°.

Online 11 October 2006

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