Question

Analyze this IR spectra of o-vanillin, identifying key peaks and bonds of functional groups:

8 BRUKER 8 8 3500 2500 Wavenumber cm-1 3000 2000 1500 1000

Answer 1

o - Vanillin IR spectrum Its Structure: - Perks and their corresponding functional groups: - O = c - M Aldehyde c - H stretch. 280 cm^-1 and 2900 with medium intensity 3100 cm^-1 is related to Aromatic c - H stretch with medium intensity Peak at 1666 cm^-1 is related to C = 0 carbonyl stretch (sharp peak) Peak at around 1470 cm^-1 is for c - c aromatic stretch with sharp peak peak at 1400 cm^-1 methyl - CH_3, C - H Bending with medium intensity Peak at 1320 cm^- and 1360 cm^- is C - 0 stretch [Alcohol and ether] Sharp peak. \r\n 1070 Cm^-1 maybe c - O stretch of ether (sharp) 950 cm^-1 O - H bending (sharp) 900 cm^-1 C - H Bend (Aromatic) sharp around 700 cm^-1 (sharp and Broad) C-H Bend