IR absorption spectrum of hydrogen xanthane

Some New Reactions and Properties of Xanthane Hydride (5-Amino-1,2,4-dithiazole-3-thione)

“…13 [(2-Nitrophenyl)amino]methanol (11). 1 Н NMR spectrum, δ, ppm: 4.91 d (2H, NHCH 2 ОH, 3 J = 6.5 Hz), 6.72-6.79 m (1Н, Н 4 Ar , overlap with signals of compound 10), 7.46-7.57 m (2Н, Н 3,5 Ar, overlap with signals of compound 10), 8.02 d (1H, Н 6 Ar , 3 J = 8.8 Hz), 8.75 t (1Н, NHCH 2 , 3 J = 6.5 Hz). The signal of ОН proton was not observed distinctly because of deuterium exchange.…”

“…s (1Н, NH). 13 С NMR spectrum, δ С , ppm: 160.4 (C 4,6 ), 181.9 (C 2 Corrosion study (potentiodynamic method). The 10×10×1 mm samples of steel 20 GOST 1050-2013 (%: С 0.17-0.24, Si 0.13-0.37, Mn 0.35-0.65, Cr < 0.25, Ni < 0.30, Fe the residue) were finished to roughness R a < 0.16 µm, ungreased with ethanol, activated for 1 min in 15% HCl, and washed with distilled water.…”

“…Xanthane hydride (isoperthiocyanic acid) 1 is the first organic compound synthesized by F. Wöhler (1821) from inorganic compounds (mercury thiocyanate and HCl) [1] 7 years before the classical synthesis of urea from ammonium cyanate. The true structure of xanthane hydride as 5-amino-3Н-1,2,4dithiazole-3-thione has been confirmed by means of Xray diffraction analysis [2,3], IR [4], and NMR spectroscopy [5,6] as well as mass spectrometry [7]. Chemical properties of xanthane hydride have been briefly described in reviews [8,9].…”

“…Xanthane hydride was aminomethylated at heating with primary amines and НСНО with the formation of DOI: 10.1134/S1070363218100043 the derivatives of new heterocyclic system {6,7dihydro-5Н- [1,2,4]dithiazolo [4,3-a] [1,3,5]triazin-3(5Н)-thione} 9a, 9b (Scheme 2) in a low yield (9-18%). The amines containing acceptor substituents did not react this way.…”