Theoretical and experimental resonance Raman intensities for the manganate ion

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Abstract
Resonance Raman spectra are reported for potassium manganate powder employing a number of exciting frequencies within the electronic absorption region of the material.In analyzing the observed variations in the relative intensities for resonance effects we have considered δM/δq (M = transition moment and q = normal coordinate) as the dominant term in the theoretical derivation of the expression for Raman intensity. This approach leads to excellent agreement between the experimental intensity data on both the fundamental as well as the first overtone of the symmetric stretching mode of the MnO ion and the derived theoretical expressions.

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