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Updated: May 29, 2025

Microscopic Visualization of Porous Nanographenes Synthesized through a Combination of Solution and On-Surface Chemistry
Published on: March 4, 2021
Crystal structure and Hirshfeld surface analysis of
Kun Li1, Jiali Yao1, Hiroaki Iitsuka1
1Department of Organic and Polymer Materials Chemistry Tokyo University of Agriculture and Technology 2-24-16 Nakamachi Koganei Tokyo 184-8588 Japan.
Abstract:
The title compound, C28H22Br2O4, crystallizes in the monoclinic space group P21/c 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⋯X (X = 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.
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