Received 26 April 2008
In the title salt, NH4+·C12H10O2P-·H2O, the ion pair and water molecule interact through hydrogen bonds to form a layer structure.
Data collection: SMART (Bruker, 2000); cell refinement: SAINT (Bruker, 2000); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL/PC (Sheldrick, 2008); software used to prepare material for publication: SHELXTL/PC.
Supplementary data and figures for this paper are available from the IUCr electronic archives (Reference: NG2451 ).
This work received funding from the Shanxi Returned Overseas Scholar Foundation.
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