Table 1.

List of band assignments for Fourier transform infrared (FTIR) spectra.

S. no.	Wavenumber (cm−1)	Functional groups	Bond type
1.	2,850–2,925	Alkane	C–H
2.	2,280–2,410	Phosphine	P–
3.	2,100–2,500		C=C, C=C
4.	1,630–1,725	Amide and Aromatic ketones	C=O
5.	1,380–1,385	Aliphatic bending	CH, CH2
6.	1,020	Silica	Si-O
7.	845	Cycloalkane	C–C
8.	778	Aromatic mono-substituted	C–C
9.	662	Alkynes	–C–H,–C=C