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