Frequency range, cm-1 Vibration type Assignment Intensity 3400-3100 v N-R -NH- m 3100 and 2850 v C-R -CH- m 1659, 1528 v C=N, v C=C Ar s 1429, 1366 δC-R -CH2-, CH3- s~m 1048 v C-Cl Ar-Cl m *: m - medium, s - strong
intrepreter: a. 3400 ~ 3100 cm-1: the broad absorption band seen here is stretching vibration of N-H , suggesting that it is due to NH containing amine. b. 3100 ~ 2850 cm-1: the broad absorption band is stretching vibration of C-H, suggesting that it is due to aliphatic hydrogens. c. 1659, 1528 cm-1: the strong absorption bands are stretching vibration of C=N, and C=C, suggesting it is due to Arenes. d. 1429, 1366 cm-1: These are the bending vibrations of -CH2-, CH3-, respectively, suggesting that it is due to -CH2-, CH3-. e. 1048 cm-1: this is stretching vibration of Ar-Cl, and suggesting it conforms to the structure of 4-chloro..
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