The Bimolecular Model of a Trimolecular Electron Donor–Acceptor Complex

The spectrum of the charge-transfer complex of 1,3-bis(diphenylamino)propane with CBr₄ is red-shifted by 900 cm⁻¹ with respect to that of N-methyldiphenylamine, which simulates the shift of the spectrum of the 2:1 complex with respect to that of the 1:1 analogue.