Li Kun, Yao Jiali, Iitsuka Hiroaki, Yonezawa Noriyuki, Okamoto Akiko
Department of Organic and Polymer Materials Chemistry Tokyo University of Agriculture and Technology 2-24-16 Nakamachi Koganei Tokyo 184-8588 Japan.
Acta Crystallogr E Crystallogr Commun. 2024 Nov 22;80(Pt 12):1313-1317. doi: 10.1107/S205698902401123X. eCollection 2024 Nov 1.
The title compound, CHBrO, crystallizes in the monoclinic space group 2/ at 193 K. The two 4-bromo-benzoyl groups are attached in a non-coplanar fashion to the naphthalene ring system and are oriented in opposite directions. The two 4-bromo-benzene rings are tilted almost symmetrically with respect to the naphthalene ring system. The crystal packing features several kinds of non-classical hydrogen bonds such as C-H⋯ ( = polar atom), in which the C-H group acts as a hydrogen-atom donor, and C-H⋯π inter-actions. The two-dimensional fingerprint plots generated in a Hirshfeld surface analysis show non-classical hydrogen bonding with short contacts involving the bromo group.