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Abstract
A reinvestigation of the crystal structure of diglycine hydrochloride, (NH2CH2COOH)2HCl, was carried out. The structure is orthorhombic, space group P212121, with a = 5.2992(6), b = 8.083(2), c = 17.973(2) Å and Z = 4. Three-dimensional intensity data collected on a CAD 4 diffractometer using CuKα radiation was used for the structure elucidation and refinement. The final R value is 0.055 for 779 reflections. All the hydrogen atoms have been located in the present study. The glycine molecules are held together by a network of N – H … Cl, N – H … O and O – H … O hydrogen bonds. One of the glycine molecules exists as a zwitterion whereas the other one in the cationic form.
Published Online: 2010-08-25
Published in Print: 1992
