Date Published: April 01, 2011
Publisher: International Union of Crystallography
Author(s): Feng-Lei Wang, Rong-Xin Yuan, Ji-Min Xie.
The title compound, C7H11NO7P2, exists as a zwitterion in which the positive charge resides on the protonated pyridyl N atom and the negative charge on one of the two phosphate groups. In the crystal, adjacent molcules are linked by O—H⋯O and N—H⋯O hydrogen bonds into a three-dimensional network.
For metal complexes of phosphonic acids, see: Ma et al. (2008 ▶, 2009 ▶).