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The two longest wavelength electronic transitions of the quinhydrones 1 and the dependence of transition energies and intensities on the mutual orientation of hydro-quinone and p-benzoquinone is studied within semiempirical π-theory. The results are in good agreement with the experimental UV-VIS spectra of closely related cyclophane-quinhydrones. The study is extended to the yet unknown quadruple-layered systems 2 which consist of two quinhydrone moieties.

Theoretical Study of the Orientation Dependence of Charge-Transfer Excitations in Quinhydrones