Infrared Energy Modes
Stretching and bending vibrational motions (modes) that are infrared
active give rise to absorptions.
Asymmetric stretching vibrations occur at higher frequencies than
symmetric stretching vibrations.
Stretching vibrations occur at higher frequencies than bending
.
vibrations
Bending vibrations :
1) In-plane
2) Out-of-plane
a) Scissoring
a) Wagging
b) Rocking
b) Twisting
11