Wavenumber cm−1

Assignments

FTIR

FT-Raman

3400

-

OH stretching

3054

3043

NH stretching vibration

2951

2925

CH3 asymmetric stretching

1677

1680

asymmetric deformation

1627

1610

COO asymmetric stretching

1389

1392

COO symmetric stretching

1358

1339

C-CH in plane deformation

1312

1314

CH bending

1166

1172

rocking

1111

1109

rocking

1021

1016

C-N stretching

868

851

COO rocking

796

801

CH rocking

661

662

CH2 rocking

573

545

COO wagging