The infrared spectra of the long-chain perfluorocarboxylic acid monohydrates differ markedly from those anhydrous dimers. Consequently, structure solid must any known dimer-containing carboxylic crystals. Consideration significant features monohydrates, supplemented by their Raman spectra, and comparison with auxiliary substances have led us to conclude that rather strong neutral carboxyl-hydro...

The synthetic method for preparing N-(3-hydroxypropyl) 3α,12α-dihydroxy-5βcholan-24-amide can lead to formation of at least three different crystal forms – an anhydrous compound and two monohydrates. The structural and thermal properties of these forms have been characterized by C-CP/MAS-NMR and IR spectroscopy, thermogravimetry, differential scanning calorimetry and by powder and single crysta...

We report the structure of the fifth monohydrate of gallic acid and two additional anhydrate polymorphs and evidence of at least 22 other solvates formed, many containing water and another solvent. This unprecedented number of monohydrate polymorphs and diversity of solid forms is consistent with the anhydrate and monohydrate crystal energy landscapes, showing both a wide range of packing motif...

Equilibrium structures and the respective binding energies of acetic acid monohydrates and dihydrates have been determined by density-functional theory calculations with different basis sets, including 6-31+G(3d,p), 6-311++G(d,p), and 6-311++G(3df,3pd). Given that the C=O and OH groups in acetic acid provide the predominant hydrogen-bonding interactions with water, six stable conformer structur...