November 2007 issue
Cover illustration: In this 2,8-dimethoxy-4,10-dimethyl-1,3,7,9-tetranitro analogue of Tröger's base, the diazocine bridge imparts a twist such that the two aryl rings are offset with respect to each other. The hinge angle of the molecule, measured as the dihedral angle between the two benzene rings, is 103.64 (5)°. See Bhuiyan, Jensen & Try [Acta Cryst. (2007), E63, o4393].