N-Saccharinperacetic Acid Monohydrate and N-Saccharinpentanoic Acid Monohydrate

Hydrogen bonds involving water molecules dominate the crystal structures of N-saccharinperacetic acid monohydrate (3-oxo-2H-1,2-benzisothiazole-2-peroxyethanoic acid 1,1-dioxide monohydrate, C₉H₇NO₆S.H₂O) and N-saccharinpentanoic acid monohydrate (3-oxo-2H-1,2-benzisothiazole-2-pentanoic acid 1,1-dioxide monohydrate, C₁₂H₁₃NO₅S.H₂O). In both structures, molecules are held together by these hydrogen bonds to form two-dimensional blocks. Interdigitation of saccharin groups between adjacent blocks completes the three-dimensional structure.

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