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The reaction of β-(thiomorpholin-1-yl)propioamidoxime with tosyl chloride in CHCl 3  in the presence of DIPEA when heated at 343 K for 8 h afforded the title hydrated salt, C 7 H 14 N 3 S + ·Cl − ·H 2 O, in 84% yield. This course of the tosylation reaction differs from the result of tosylation obtained for this substrate at room temperature, when only 2-amino-8-thia-1,5-diazaspiro[4.5]dec-1-ene-5-ammonium tosylate was isolated in 56% yield. The structure of the reaction product was established by physicochemical methods, spectroscopy, and X-ray diffraction. The single-crystal data demonstrated that the previously reported crystal structure of this compound [Kayukova  et al.  (2021).  Chem. J. Kaz ,  74 , 21–31] had been refined in a wrong space group. In the extended structure, the chloride anions, water molecules and amine groups of the cations form two-periodic hydrogen-bonded networks with the  fes  topology.

Redetermination of the structure of 2-amino-8-thia-1,5-diazaspiro[4.5]dec-1-en-5-ium chloride monohydrate