Inclusion Compounds of 5-(4-Methylphenyl)-5H-dibenzo[a,d]cyclohepten-5-ol with Dimethylsulphoxide, Morpholine and N-Methyl-2-pyrrolidinone

Water-Tolerant Hydrogen-Bonded Organic Framework Based on Phenylbis(benzimidazol-2-yl)methanol: Synthesis, Structural Characterization, and Organic-Vapor-Adsorption Properties

“…Therefore, we decided to analyze the interactions between the NH site and six-membered rings in detail. The distances from the hydrogen atom of the NH site, which was placed according to the residual peaks of the electron density (N–H distance of 0.88(5) Å (not restrained)), to the six-membered rings (2.61(5) and 2.83(5) Å; Figure a) and the angles formed by the N–H bond and the line perpendicular to the six-membered rings from the hydrogen atom (134(3)° and 108(3)°; Figure a) are within the range previously reported for several organic crystals that have been reported to form weak N–H···π interactions (2.35(2)–3.01(5) Å, average 2.66(22); 107(3)–166.32(18)°, average 143(18)°). − We also performed a Hirshfeld surface analysis for the surface of the NH site using CrystalExplorer . Blue-colored highlights pointing toward the six-membered rings were observed from the NH site (Figure b, left), suggesting the presence of contacts longer than the van der Waals contact .…”

The Dibenzosuberenone Scaffold as a Privileged Substructure: From Synthesis to Application

“…In addition, the Jacobs group obtained the inclusion compounds of 5-(4-methylphenyl)-5H-dibenzo[a,d]cyclohepten-5-ol (122c) with dimethyl sulfoxide, morpholine, and 1-methylpyrrolidin-2-one (NMP), and determined their crystal structures and thermal stabilities (Figure 10). 90 In 2017, the Klumpp group reported that cationic 4n+2 or 4nπ-electron systems may show enhanced aromaticity or antiaromaticity through charge-charge repulsion effects. 92 For this purpose, 9-aryl-9H-fluoren-9-ol and 5-aryl-5H-benzo[a,d]cyclohepten-5-ols derivatives were used.…”