FT-IR characteristic absorptions.

Entry	Functional group	Absorption (cm−1)	Reference
1	O–H bonds	>3000	41
2	C–OH bonds	1224	42
3	C–H bonds	878, 2958	24
4	C C bonds	1624	43
5	C O bonds	1714	44
6	Si–O–Si bonds	462, 800	43
7	Si–O–C bonds	1040, 1082	43
8	C–O–C bonds	1250	45
9	Epoxides	1205	43
10	Alkoxy C–O bonds	1050–1125	46
11	Carboxyl C–O	1199	46
12	C N bonds	1625	47