Raman scattering measurements have been carrie dout on a single crystal of α-glycine in the temperature range 83–360 K. The observe dsplitting of the NH₃⁺torsional mode in the  temperature range 83–313 K shows that NH₃^ααtorsional motion is non-degenerate even at ambient conditions. The stiffening of the N⁺H stretch mode on increasing the temperature from 120 to 360K suggests increase in the inter-layer hydrogen bond length with temperature.