%0 Journal Article
%T 2-Amino-1-(2-carboxylatoethyl)pyrimidin-1-ium monohydrate
%A Christopher R. Sparrow
%A Edwin H. Walker Jr
%A Frank R. Fronczek
%J Acta Crystallographica Section E
%D 2010
%I International Union of Crystallography
%R 10.1107/s1600536810045332
%X In the title structure, C7H9N3O2¡¤H2O, there are two formula units in the asymmetric unit. The molecule is a zwitterion, containing a quaternary N atom and a deprotonated carboxyl group, with C¡ªO distances in the range 1.256 (2)¨C1.266 (3)  . The two independent molecules form a hydrogen-bonded R22(16) dimer about an approximate inversion center via N¡ªH...O hydrogen bonds, with N...O distances of 2.766 (2) and 2.888 (2)  . O¡ªH...O hydrogen bonds involving the water molecules and additional N¡ªH...O hydrogen bonds link these dimers, forming double chains.
%U http://scripts.iucr.org/cgi-bin/paper?S1600536810045332