19384-06-6Relevant articles and documents
Structure and hydrogen bonding of solid N1-alkyl-N2-arylthioureas. 13C CP/MAS, IR and semi-empirical AM1 studies
Wawer, Iwona,Koleva, Vera
, p. 207 - 212 (1996)
Seven crystalline N1-alkyl-N2-arylthioureas were studied by 13C CP/MAS NMR and by IR spectroscopy. The double set of signals in 13C CP/MAS spectra indicates that molecules of N1-ethyl-N2-(3-methylphenyl)thiourea and N1-ethyl-N2-(4-methylphenyl)thiourea are crystallographically non-equivalent. N1-Propene-N1-phenylthiourea forms cyclic dimers with two N2-H...S hydrogen bonds, as confirmed recently by x-ray diffraction. The broad vNH maxima at 3175-3295 cm-1 in the IR spectra indicate that in other thioureas both N1-H and N2-H protons are involved in hydrogen bonding and that the non-bonded N1-H proton in cyclic dimers of N1-propenethioureas is probably an exception. Semi-empirical AM1 calculations showed that the N2-H proton is more positively charged than the N1-H proton and therefore should be preferentially involved in N2-H...S hydrogen bonds.
Synthesis, characterization and structural study of new ethyl thiourea compounds and the preliminary naked-eye sensors for mercury and argentum metal ions
Hasbullah, Siti Aishah,Raffik, Syahidatul Munirah,Noh, Nurnadzirah Mat,Zakariah, Emma Izzati,Ngah, Fatimatul Akma Awang,Abosadiya, Hamza Milad,Yamin, Bohari
, p. 800 - 806 (2017/05/26)
Novel ethyl thiourea compounds 1a- 1f have been synthesized in good to high yields. The structure of all compounds were identified using FT-IR, 1H NMR, 13C NMR spectroscopies, and ESI-Mass spectrometry. The compound 1-ethyl-3-(3-meth
