Acta Cryst. (2002). E58, o123-o125  [ doi:10.1107/S1600536802000090 ]

L-Phenylalanine L-phenylalaninium dihydrogenphosphate

B. Ravikumar, B. Sridhar and R. K. Rajaram

Abstract: In the title compound, C₉H₁₁NO₂·C₉H₁₂NO₂⁺·H₂PO₄^-, the dihydrogenphosphate anion links the phenylalaninium and zwitterionic phenylalanine residues via strong O-HO hydrogen bonds. A three-centered hydrogen bond is observed in the phenylalaninium residue. This aggregation results in the formation of hydrophilic layers that are sandwiched between hydrophobic layers. Both S2 and Z1 head-to-tail sequences are observed.

Online 11 January 2002

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