Spectroscopic Evidence of Solute-Solvent Interactions
The dissolution of a compound in several different solvents is studied using spectroscopy. Which of the following observations provides the most direct evidence that the electronic structure of the compound is altered by solute-solvent interactions?
A
Constant peak positions in IR spectrum regardless of solvent
B
Identical fluorescence lifetimes in all solvents
C
Unchanged rotational constants in different solvents
D
Solvatochromic shift in UV-visible absorption maxima
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