1,7-Dibromo-2,8-dimethyl-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine

Abstract

In the title compound, C17H16Br2N2, the 1,7‐dibromo‐2,8‐dimethyl analogue of Tröger's base, the aryl rings are offset with respect to one another. The dihedral angle between the two benzene rings is 97.47 (5)°; the mol­ecule is C2‐symmetric.

3,9-Dibromo-2,8-dimethyl-6H,12H-5,11-methanodibenzo[b,f][1,5]diazocine

“…1) was one of three compounds produced in racemic form by reacting 3-bromo-4-methylaniline with paraformaldehyde in trifluoroacetic acid (TFA). The structure of a second product, 1,7-dibromo-2,8-dimethyl Trö ger's base, is reported in the preceding paper (Faroughi et al, 2007)…”

“…Compound (I) (Fig. The structure of a second product, 1,7-dibromo-2,8-dimethyl Trö ger's base, is reported in the preceding paper (Faroughi et al, 2007) The structure of a second product, 1,7-dibromo-2,8-dimethyl Trö ger's base, is reported in the preceding paper (Faroughi et al, 2007) …”

“…2), but there are no significantinteractions. This contrasts with the isomeric compound, 1,7-dibromo-2,8-dimethyl Trö ger's base, where the interactions are between one endo and one exo face of the molecule (Faroughi et al, 2007). Compound (I) also exhibits interlayer BrÁ Á ÁBr interactions, the closest of which is 3.7068 (4) Å between Br1 and Br2 i [symmetry code: (i) x À 1, y, z À 1].…”