20305-50-4Relevant articles and documents
Onium Sulfates and Hydrogen Sulfates: Products of Reactions of Sulfur(IV) Oxide with Aqueous Solutions of Alkylamines and Aniline
Khoma,Gel’mbol’dt,Ennan,Baumer,Rakipov,Dlubovskii
, p. 655 - 660 (2018/06/14)
The reaction products formed in the SO2–L–H2O–O2 systems (L is n-propylamine, n-butylamine, tert-butylamine, n-heptylamine, n-octylamine, aniline) were isolated and identified as “onium” salts [n-C3H7NH3]2SO4, [n-C4H9NH3]2SO4, [t-C4H9NH3]2SO4, [n-C7H15NH3]3SO4(HSO4), [n-C8H17NH3]3SO4(HSO4), and [C6H5NH3]2SO4. The products were characterized by elemental analysis, IR and Raman spectroscopy, mass spectrometry, and thermogravimetry.
Semi-organic salts of aniline with inorganic acids: Prospective materials for the second harmonic generation
Matulková, Irena,Cihelka, Jaroslav,Fejfarová, Karla,Duek, Michal,Pojarová, Michaela,Vank, Pemysl,Kroupa, Jan,ála, Michal,Krupková, Radmila,Němec, Ivan
body text, p. 4131 - 4138 (2012/04/17)
Three novel inorganic salts of aniline with sulfuric and selenic acids were prepared and characterized by X-ray structural analysis. Anilinium(1+) selenate, (C6H5NH3 +) 2SeO4 2-, and anilinium sulfate, (C 6H5NH3 +)2SO 4 2-, crystallize in the monoclinic space group C2. The crystal structures are based on hydrogen bonded layers of alternating anilinium cations and inorganic anions. Anilinium(1+) selenate dihydrate, (C 6H5NH3 +)2SeO 4 2-·2H2O, crystallizes in the monoclinic space group C2/c. The crystal structure is formed by a network of alternating anilinium cations, selenate anions and water molecules connected by a system of intermolecular hydrogen bonds. The FTIR and Raman spectra of all the compounds have been recorded and discussed as well as their crystal structures. According to the DSC curves and temperature dependence of lattice parameters, anilinium sulfate exhibits phase transitions at 217 and 182 K. The appropriate changes of vibrational spectra were also recorded during cooling of the sample especially in the N-H stretching and sulfate antisymmetric stretching (ν3 SO4 2-) spectral regions. The quantitative measurements of the second harmonic generation at 1064 nm were performed using powdered samples of anilinium sulfate, anilinium chloride and anilinium selenate, and the relative efficiencies deff = 0.05dKDP, deff = 2.33dKDP and deff = 0.05dKDP (KDP; i.e. KH 2PO4) have been observed, respectively.
Sulfonation of arylamines Part 9 - Solid state synthesis of di-ortho ring substituted aminobenzenesulfonic acids
Singh, Gurdip,Kapoor, Inder Pal Singh,Singh, Jyotsna
, p. 1114 - 1117 (2007/10/03)
Di-ortho ring substituted arylammonium sulfates (Di-o-RSAS) have been prepared from the corresponding arylamines by treatment with conc. H2SO4 and characterized by elemental, gravimetric and spectral analyses. These sulfates yield the corresponding ring substituted aminobenzenesulfonic acids (RSABSA) when subjected to thermal energy. Non-isothermal gravimetric studies on di-o-RSAS support the formation of RSABSA. It is observed that most of the salts undergo transformation to acid in solid state via proton transfer reaction prior to sulfonation.
Kinetics of Thermal Decomposition of Dianilinium Sulphate
Singh, Gurdip,Kapoor, Inder Pal Singh
, p. 2155 - 2158 (2007/10/02)
The thermal decomposition of arylammonium sulphate (dianilinium sulphate) has been investigated; sulphanilic acid is found to be the decomposition product.The mean value for the energy of activation (28.27 +/- 0.46 kcal mol-1) for the decomposition has been determined from isothermal TGA data , contracting area, contracting cube, and Jacobs-Kureishy equations.Thus, the decomposition of dianilinium sulphate seems to be controlled by a random nucleation process.The results suggest that the primary step (prior to sulphonation) in the decomposition of this salt is a proton-transfer process.
