Polymorphism and Peroxomorphism in Peroxosolvates of Zwitterionic Sulfonic Acids: Features of H-Bonding and Crystal Packingстатья
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Дата последнего поиска статьи во внешних источниках: 15 февраля 2024 г.
Аннотация:A novel class of crystalline hydrogen peroxide adducts, peroxosolvates of zwitterionic sulfonic acids C2H7NO3S·H2O2 (1), p-C6H7NO3S·H2O2 (2), p-C6H7NO3S·0.5(H2O2) (3), m-C6H7NO3S·H2O2 (4), o-C6H7NO3S·H2O2 (5), C5H5NO3S·H2O2 (6), C12H8N2O3S·H2O2 (7), C8H17NO3S·2(H2O2) (8), C10H9NO4S·1.25(H2O2)·0.25(H2O) (9), C10H9NO4S·H2O2 (10), and C10H9NO4S·0.94(H2O2)·0.06(H2O) (11), were prepared from highly concentrated hydrogen peroxide, and their structures were determined by X-ray crystallography. In all compounds, first observed charge-assisted HOOH···–O3S– and well-known NH+···–O3S– hydrogen bonds played a predominant role in crystal packing. The influence of H-bonding on valent S–O distances was discovered. A comparative analysis of the HOOH···O hydrogen bond strength was performed. Polymorphism and temperature-induced phase transition for organic peroxosolvates were observed for the first time. A noticeable temperature dependence of hydrogen peroxide O–O distance was found for compound 8.