Fig. 2: Single-crystal X-ray diffraction structures and 1H NMR spectrum of HBCP.
From: Precisely metal doped nanographenes via a carbaporphyrin approach

A Front and B Side views of HBCP. Thermal ellipsoids are scaled to the 50% probability level. Solvent molecules and hydrogen atoms are omitted for clarity. C Partial 1H NMR spectrum of HBCP recorded in CD2Cl2 at room temperature (293 K, 600 MHz). Asterisks indicate residual solvent peaks. The labeling refers to the features for only one set of proton signals due to the symmetry.