6.27. IR Spectrum Window

Display IR and Raman spectra. The list on the left shows the frequency, the IR intensity, the Raman intensity, and on the graph on the right they are displayed after they are broadened.

In GAMESS, you can display both spectra simultaneously by reading additional Raman spectrum with the IR spectrum read. When you click on the graph, the row of the peak close to that position is selected in the list.

Freq. Scaling

Select the frequency scaling factor to compensate for systematic errors. From the pull-down menu, select the method/basis function value used for calculation. You can edit the list of scaling factors by pressing the Edit button.


Select Raman Activity / Depolar (P) / Depolar (U).


Display IR spectrum.


Animate the vibration state of the selected peak.


Vibration status of the selected peak is displayed.


Adjust amplitude in animation display and length in vector display.

X Range

Specify the range of the horizontal axis.


The horizontal axis is inverted and displayed.

Y Scale

Change the scale of the vertical axis.


The vertical axis is inverted and displayed.


Set the full width at half maximum of broadening.


Select the format to output the file.

Export csv (Discrete) & Open Excel

Output the csv file and open it.

Export csv (Discrete)

Output csv file for discrete spectra.

Export csv (Broadened) & Open Excel

Output and open a csv file for the broadened spectrum.

Export csv (Broadened)

Outputs a csv file for the broadened spectrum.

Export Image

Save the graph as GIF or JPEG.

Copy Image

Copy the graph to the clipboard.


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