Acta Cryst. (2003). E59, o907-o909  [ doi:10.1107/S1600536803011188 ]

Triethanolammonium dihydrogenphosphate

S. Demir, V. T. Yilmaz and W. T. A. Harrison

Abstract: The structure of the title compound, [HN(C₂H₄OH)₃]⁺·H₂PO₄^- or C₆H₁₆NO₃⁺·H₂PO₄^-, contains two distinct dihydrogenphosphate anions and two triethanolammonium cations in the asymmetric unit. The H₂PO₄ units are linked in a polymeric chain by strong P-OHO-P hydrogen bonds along the [010] direction, while the (H₂PO₄)^- and [HN(C₂H₄OH)₃]⁺ ions are connected by O-HO hydrogen bonds to yield sheet-like entities. The triethanolammonium cation shows a tripodal conformation and the ammonium H atom forms an intramolecular trifurcated hydrogen bond with the O atoms of the three ethanol groups.

Online 10 June 2003

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