Zwitterionic bisulfite adducts of aldehydes: synthesis, structure, and composition of their oxidation products

Polymorphism and Peroxomorphism in Peroxosolvates of Zwitterionic Sulfonic Acids: Features of H-Bonding and Crystal Packing

“…Definitely, the more the number of hydrogen bonds, the longer S–O bond: 1.439–1.446 Å (no bonds), 1.451–1.464 Å (one H-bond), and 1.450–1.470 Å (two H-bonds). The same trend was previously observed for the structures of unsolvated zwitterionic sulfonic acids …”

“…They exhibit regular values of bond lengths and angles in comparison with ordinary organic molecules . These geometric parameters also well correspond to those found in the structures of starting compounds and/or their hydrates (taurine, , sulfanilic acid, − orthanilic acid, metanilic acid, − 3-pyridinesulfonic acid, and hydroxy­(quinolinium-2-yl)­methanesulfonate). The O–O bond distances lie within the normal range for solvent H 2 O 2 molecules (1.442(7)–1.470(2) Å) .…”

“…Bisulfite adduct of quinoline-2-carbaldehyde was prepared from aldehyde according to the literature method. , …”

“…Bisulfite adduct of quinoline-2-carbaldehyde was prepared from aldehyde according to the literature method. 60,61 60 wt % hydrogen peroxide was purchased from Fisher Scientific (Loughborough, UK). 96 wt % hydrogen peroxide was prepared by an evaporation method.…”

“…The same trend was previously observed for the structures of unsolvated zwitterionic sulfonic acids. 60 3.14. Comparative Analysis of the HOOH•••O Hydrogen Bond Strengh.…”