Table 5.

Table showing frequencies visible in the spectra and their possible functional groups before and after degradation of aniline.

Serial number	Frequency	Bond	Functional group
Before degradation
1	3639.68	O-H stretch, free hydroxyl	Alcohols, phenols
2	3155.54 3140.11	O-H stretch	Carboxylic acids
3	1726.29	C=O stretch	Carbonyls, carboxylic acids, aldehydes, saturated aliphatics, and α and β-unsaturated esters
4	1581.63	N-H bend	Primary amines
5	1402.25	C-C stretch (in ring)	Aromatics
6	1139.93	C-O stretch	Alcohols, carboxylic acids, esters, and ethers
7	935.48	=C-H bend	Alkenes
8	877.61	C-H “oop”	Aromatics
9	619.15 532.35	C-Br stretch	Alkyl halides
After degradation
1	3163.26 3143.97	O-H stretch	Carboxylic acids
2	1654.92	-C=C- stretch	Alkenes
3	1400.32	C-C stretch (in ring)	Aromatics
4	1139.93	C-O stretch	Alcohols, carboxylic acids, esters, and ethers
5	995.27 935.48	=C-H bend	Alkenes
6	619.15 528.50	C-Br stretch	Alkyl halides