Infrared-Active Vibrational Modes in Water

This simulation shows the fundamental vibrations of the water molecule: symmetric stretch, asymmetric stretch and bending. Any vibration of the molecule is a combination of these normal modes. Also, in liquid water, rotations may cause an infrared absorption with motions restricted by hydrogen bonds. As a consequence, a broad absorption band occurs at lower wavelengths.

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Authors: D. Meliga, S. Z. Lavagnino. Open content licensed under CC BY-NC-SA.


View the source code for this simulation