The title compound, C3H10NO3P, crystallizes in its zwitterionic form, H3N+CH(C2H5)PO(O-)(OH), with the asymmetric unit being composed by two of such entities (Z' = 2). The crystal packing leads to a sequence of hydrophobic and hydrophilic layers. While the hydrophobic layer comprises the aliphatic substituent groups, the hydrophilic one is held together by a series of strong and rather directional N+-H center dot center dot center dot O and O-H center dot center dot center dot O hydrogen bonds.



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Fernandes, JA; Vilela, SMF; Paz, FAA

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We are grateful to the Fundacao para a Ciencia e a Tecnologia (FCT, Portugal) for their general financial support (R&D project PTDC/QUI-QUI/098098/2008), for the postdoctoral and PhD research grants Nos. SFRH/BPD/63736/2009 (to JAF) and SFRH/BD/66371/2009 (to SMFV), and for specific funding toward the purchase of the diffractometer.

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