Crystal structure and spectroscopic properties of glycinium monophenylphosphate

The crystal structure of glycinium monophenylphosphate NHsk3/+CH₂COOH·C₆H₅OPO₃H^– has been determined. The crystals are orthorhohombic:Pbca (NO. 61),a=26.001(3),b=7.423(2),c=11.273(2) Å,Z=8. The structure was solved by direct methods, are refined toR=0.035 for 1499 independent reflections. The crystal structure is stabilized by a three-dimensional network of hydrogen bonds. The phosphate group is involved in five H bonds: three NO and two OO bonds, with the shortest distances 2.745(3) and 2.608(2) Å, respectively. The glycine cation is entirely planar, and a cationo-anionic form of the title compound has also been confirmed in solution byIR studies.