Question

What types of electronic transition possible in ethyl acetate?

Answer 1

Answer:

The electronic spectra of gaseous formic acid, acetic acid, and ethyl acetate were measured in the vacuum ultraviolet region; new bands were found at 159, 160, and 164 mμ, respectively. Since their molecular extinction coefficients at the peak wavelengths are 2500 ∼ 4200, the bands can be assigned to the first  transition band.

π-electron energy levels and wave functions were calculated with formic acid. The results show that the 159-mμ band has a mixed character of the local excitation within the CO group and the charge transfer type excitation accompanied by electron transfer from the electron donor (OH) toward the acceptor (CO).

Explanation: