Transmittance 40 50 60 70 80 90 100 8 438 89 3192 36 8 17 66

Transmittance 40 50 60 70 80 90 100 8 438 89- 3192 36 8 17 66- 1571.28 8 348 66- 128850 1229 73-a\" 1067 69 8 735 32

Solution

The band at 1617 and 1571 cm-1 is might be due to alkene C=C streaching

The broad band at 3192 cm-1 is due to hydroxy group

The broad band at 3430 cm-1 is might be due to amino group

Using IR we can identify only the functional group and we cannot identify the complete structure