Question

vibrational transition exist in?
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Answer 1

Combination modes can be found at the sum or difference frequency of the fundamental modes involved. Both overtones and combination bands are usually considerably lower in absorbance than the fundamentals. Hence, NIR is not as frequently applied for the analysis of interfacial structures, as for these, higher sensitivity is required. Nevertheless, in situ applications for interface characterization exist of NIR, for example, in electrochemistry.

Answer 2

Answer :

Hey :-

A molecule's rotation can be affected by its vibrational transition because there is a change in bond length, so these rotational transitions are expected to occur. Since vibrational energy states are on the order of 1000 cm-1, the rotational energy states can be superimposed upon the vibrational energy states.

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