Table 2.

FTIR peak values with functional group of C. orchioides A.L. extract.

Frequency Range (cm−1)	Frequency Peak (cm−1)	Bond	Functional Group
600–650	618.51	C-Br stretch	Alkyl halides
	648.01
680–720	696.43	C-H “oop”	Aromatics
	721.35	C-H rock	Alkanes
1000–1500	1017.59	C-O stretch	Alcohols, carboxylic acids
	1453.90	C-C stretch	Aromatics
1600–1700	1652.33	C=C	Alkenes
3300–3610	3365.12	N-H stretch	1° Amines
	3609.93
3700–4000	3713.81	O-H stretch, free hydroxyl	Alcohols, Phenols
	3887.79
	3941.77