FT-IR, 1H NMR, 13C NMR AND X-RAY CRYSTALLOGRAPHIC STRUCTURE DETERMINATION OF 4-NITRO-BENZENESULFONIC ACID 2,4-BIS-(1-PHENYL-ETHYL)-NAPHTHALEN-1-YL ESTER

Keywords:nitro-benzenesulfonic acid phenyl-ethyl naphthalene ester.

ИЗУЧЕНИЕ ВЛИЯНИЯ ИОННОГО ОБМЕНА НА СОРБЦИОННЫЕ СВОЙСТВА ЦЕОЛИТА РОДА ГЕЙЛАНДИТА—КЛИНОПТИЛОЛИТА, STRUCTURE AND BIOLOGICAL EVALUATION OF (E)-5-BROMO-2-METHOXY4-((PHENYLIMINO)METHYL)PHENOL DERIVATIVES AS ANTIBACTERIAL AGENTS, ...

The dihedral angle between the naphthalene unit and nitro-benzenesulfonic acid, 2-phenyl-ethyl and 4-phenyl-ethyl are 49.68(05), 82.96(06), and 81.94(07) respectively. <...> Arene sulfonic acids and their derivatives are important materials of industrial chemistry: they serve as a basis to synthesize many pharmaceuticals, plant protecting agents, high-temperature polymers (polysulfones), food additives, dyes, detergents, antioxidants, and extractants. <...> Hydrates, nitroand hydroxy-substituted derivatives of benzenesulfonic acid are of interest as proton-conducting components of polymeric membranes in fuel cells [ 1 ]. <...> Sulfonic acids are interesting and widely used chemical reagents. <...> Benzenesulfonic acid (BSA) is a very strong acid (pKa = –2.8, approximately equal to sulphuric acid), solid at room pressure and temperature and is very soluble in the usual organic solvents [ 2 ]. <...> Large amounts of sulfonated aromatic compounds are being produced as building blocks for the synthesis of dyes and detergents and released into the environment as waste during their manufacture and use [ 3 ]. <...> Due to the formation of intra- and intermolecular hydrogen bonds and high polarization of the sulfo groups in the presence of water, aromatic sulfonic acids are good model systems for the elucidation of the proton migration pathways in the crystal structures [ 4 ]. <...> A chemical diagram of compound 1 is shown in the Scheme. <...> The organic layers were combined, dried and concentrated under vacuum to give 4-nitro-benzenesulfonic acid 2, 4-bis-(1-phenyl-ethyl)-naphthalen-1-yl ester 1 as an off-white solid. <...> The vibrational bands with the wave numbers of 1531.44 cm–1 (asymmetric ArNO2 stretching), 1377.40 cm–1 (asymmetric SO2 stretching), and 1186.60 cm–1 (symmetric SO2 stretching) Characterization by spectroscopy. <...> The FT-IR data for title compound 1 is given in the were observed. 1H NMR. <...> The methyl protons were observed as a multiplet at 1.60 ppm and CH moieties were observed as two quartets at 4.63 ppm and 4.75 ppm respectively. <...> The aromatic protons of phenyl and naphthalene moieties are observed as multiplets at 7.14 ppm, 7.24 ppm, 7.27 ppm, and 7.28 ppm, a doublet at 7.71 ppm, and a doublet at 7.93 ppm respectively. <...> The other aromatic protons of the nitro benzene moiety were observed as a doublet at 8.14 ppm and a doublet at 8.32 <...>

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