Table 2.

The tentative peak assignment for the general FTIR spectra (600–3100 cm⁻¹) for NSO and GSO.

No	Peak (cm−1)	Peak Intensity		Tentative Assignment
		NSO	GSO
1	719	0.575	0.565	CH=CH– bending out of plane
2	866	0.141	0.131	=CH2 wagging
3	914	0.176	0.161	–C–H bending out of plane
4	968	0.186	0.170	trans –CH=CH– bending out of plane
5	1028	0.217	0.209	–C–O stretch
6	1097	0.470	0.460	–C–O stretch
7	1161	0.794	0.776	–C–O stretch; –CH2 bending
8	1236	0.384	0.360	–C–O stretch
9	1375	0.223	0.203	–C–H bending
10	1460	0.369	0.332	–CH2 bending
11	1743	1	1	C=O stretching
12	2852	0.54	0.465	–CH2 asymmetrical stretching
13	2924	0.753	0.648	–CH2 symmetrical stretching
14	3008	0.154	0.151	(trans =C–H stretch)