Electronic and Charge-Transfer Spectra

It has been recently demonstrated that quantities derived from the simple MO theory can also be used successfully to correlate excitation energies of the first maxima in the electronic spectra of various sulfur compounds. At the same time, this method is incapable of solving such a basic problem as the assignment of absorption bands to electronic 

Molecular Wave Functions of 1,4-Dithiin and Their Energies41 

Aside from attempts to interpret the electronic spectrum of thiophene in terms of the MO method,18,31,33,84,36,41 successful use of the 

Electronic Spectra op Thiophene-like Heterocycles and Related Compounds16-17 

Compound Solvent A(m fi) i (kcm-1) logs E(N - Vi)b Reference (absorption spectrum) 

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