Typical Vibrational Frequencies of Inorganic Species¹

Last Update: July 26, 2005

Figure 1.²  Observed frequency ranges for polyatomic ions.  See reference 2 for a description of the vibrations associated with each frequency.  Raman active bands are shown as dashed lines.

Table 1.  Approximate IR frequencies (in cm^-1) of other common polyatomic ions not shown in Figure 1.³

Figure 2.²  Metal-ligand vibrations.  See reference 1 for a complete discussion of the motions associated with each vibration.  The ranges for species marked with an ‘*’ include both bridged and non-bridged compounds.  Whether a particular vibration is IR or Raman active depends on the particular geometry about the metal center.^{2, 4, 5, 6}

References

1.  Click here to download this file in PDF format (link not yet active).

 

2.  Nakamoto, K. Infrared Spectra of Inorganic Coordination Compounds, 2^nd Ed. Wiley-Interscience: New York, 1970.

 

3.  Dolphin, D. and Wick, A. Tabulation of Infrared Spectral Data Wiley-Interscience: New York, 1977.

 

4.  Drago, R. S. Physical Methods in Chemistry W. B. Saunders: Philadelphia, 1977.

 

5.  Ebsworth, E. A. V.; Rankin, D. W. H. and Cradock, S. Structural Methods in Inorganic Chemistry, 2^nd Ed. Blackwell Scientific Publications: Boston, 1991.

 

6.  Wilson, Jr., E. B.; Decius, J. C. and Cross, P. C. Molecular Vibrations: The Theory of Infrared and Raman Vibrational Spectra Dover: New York, 1955.

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