Abstract
Charge transfer absorption maxima have been determined for a number of new complexes between substituted quinonechlorimides and π-donors in cyclohexane. Electron affinity value of the acceptors p-benzoquinone(4)-chlorimide (BC), 2-chloro p-benzoquinone(4)-chlorimide (MCBC), 2,6-dichloro p-benzoquinone(4)-chlorimide (DCBC) and 2,3,6-trichloro p-benzoquinone(4)-chlorimide (TCBC) have been determined from these spectra and compared with those of the corresponding quinones. Results on E LVMO values for these acceptors as obtained by semi-empirical MO calculations show the same trend. Factors which determine the electron affinity of a quinonoid are discussed.
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