S−H…O and O−H…O Hydrogen Bonds‐Comparison of Dimers of Thiocarboxylic and Carboxylic Acids

The Cover Feature shows centrosymmetric dimers of 2‐hydroxybenzoic and 2‐hydroxythiobenzoic acids that are linked by the O‐H⋅⋅⋅O and S‐H⋅⋅⋅O hydrogen bonds, respectively. The intramolecular O‐H⋅⋅⋅O hydrogen bonds are also observed for both species. Dimers of carboxylic and thiocarboxylic acids occur in crystal structures, they are also analysed theoretically. More information can be found in the Article by Sławomir J. Grabowski and co‐workers.