Related Experiment Video
Updated: May 27, 2026

Preparation of Stable Bicyclic Aziridinium Ions and Their Ring-Opening for the Synthesis of Azaheterocycles
Published on: August 22, 2018
2-Azido-1-(3,6-dichloro-9H-fluoren-1-yl)ethanone
Abstract:
In the title compound, C(15)H(9)Cl(2)N(3)O, an intra-molecular C-H⋯O inter-action generates an S(7) ring motif. The cyclo-penta-1,3-diene ring forms dihedral angles of 1.93 (6) and 2.78 (6)° with its attached benzene rings. In the crystal, mol-ecules are linked by C-H⋯N and C-H⋯O hydrogen bonds, thereby forming layers lying parallel to the ac plane. The crystal also features a π-π inter-action with a centroid-centroid distance of 3.5612 (6) Å.
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