Viewing Vibrations

This feature allows visualizing vibrations from a “frequency” calculation with quantum chemistry codes (e.g., Gaussian, ORCA, Q-Chem, etc.)

After opening a corresponding output file, the “Vibrations” window will automatically open.

In some cases, programs will include negative (imaginary) frequencies, or zero frequencies for the translational and rotational motion.

This toolbar allows you to view the various vibrations of a molecule. Selecting a frequency, and clicking “Start Animation” will begin a vibration.

Avogadro also lets you tune the vibration amplitude and display the force vectors on the atoms.

If the calculation included Raman intensities, the window will also show those.