An Efficient Green Procedure for Synthesis of Some Fluorinated Curcumin Analogues Catalyzed by Calcium Oxide under Microwave Irradiation and Its Antibacterial Evaluation

Table 2

FT-IR stretching frequencies for selected functional groups and UV-vis absorption band of curcumin analogues 1–5.

Compound	FT-IR stretching frequencies cm^−1
	−OH	>C=O	Aliphatic; C=C	Aromatic; −C−H	Aliphatic; −C−H
1	3404	1684	1601	3073	2922, 2854
2	3501	1698	1619	3057	2925, 2854
3	3426	1698	1612	3080	2925, 2855
4	3481	1700	1609	3062	2923, 2860
5	3488	1705	1621	3088	2925, 2849