Other examples Charge-transfer complex

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fig. 2 synthesis of hb complex: alkyne trimerisation of bisubstituted alkyne dicobalt octacarbonyl, delocalization favored activating groups such di(ethylamino) group

the phenyl groups positioned in angle of around 45° respect central aromatic ring , positive charge in radical cation therefore through-space-delocalised through 6 benzene rings in shape of toroid. complex has 5 absorption bands in near-infrared region, can assigned specific electronic transitions aid of deconvolution , mulliken-hush theory.








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