Table 3.

Characterization peaks in IR spectrum of risperidone

	Absorption peak (cm −1 )
	1000-1200	1129	1352	1535 and 3060	1650	3064
TYPE OF BOND	C–N stretching of the tertiary amine	C-F Stretching of the aryl fluoride	C-N stretching of the oxazole ring	C=C stretching of an arene ring	C=O stretching vibration of the $\beta$-lactam ring	C-H asymmetric stretching of aromatic ring