Infrared and Raman spectra of melaminium chloride hemihydrate

Room temperature powder infrared and Raman measurements for the new melaminium salt, 2,4,6-triamino-l,3,5-triazine-1-ium chloride hemihydrate, C3H8N6+·Cl− · 0.5H2O were carried out. The vibrational spectra in the region of internal vibrations of ions corroborates the X-ray data recently published by Janczak (Acta Crystallogr. 57 (2001) 1120) Some spectral features of this new crystal are referred to corresponding one for melamine crystal as well as other melamine complexes in crystalline form.