Abstract
AbstractCharge‐transfer (CT) complexes of various N‐arylisoindolines as donors with 1, 4‐benzoquinones [2, 3‐dichloro‐5, 6‐dicyanobenzoquinone (DDQ), chloranil (CHL) and bromanil (BRL)] as π‐acceptors have been studied spectrophotometrically. Effects of substituents on CT complexation has been discussed in terms of a Hammett correlation and the wavelengths of the CT absorption maxima. Isoindolines with ortho‐substituted N‐aryl groups have been proven to be more basic than the other para‐and meta‐isomers. The nature of CT interactions in the CT complexes is reported. A linear correlation between the constants of formation and the position of maximum absorption wavelengths of the CT complexes has been observed.
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