Acta Cryst. (2001). E57, o581-o583 [ doi:10.1107/S1600536801008960 ]
Abstract: In the title compound, 2C4H10NO3+·SO42-·H2O, both threoninium molecules have a gauche II form for the C and gauche I form for the O. The sulfate anion links the cation in an infinite manner through hydrogen bonds along the b and c axes. The two water molecules on the twofold axes link the sulfate groups and one of the cations.
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