A naphthalene-fused tricyclic orthoamide

The crystal structure of 3a,6a,12b-triaza-1,2,3,3a,4,5,6,6a,12b,12c-decahydroperylene, C 17 H 19 N 3 , (6), shows that the naphthalene unit adopts an orientation orthogonal to the average plane of the triaza-trans-decalin moiety. This forces two aromatic N-atom lone pairs to orient equatorially and thus allows only partial overlap with the naphthalene π system.