Étude par spectroscopie d'absorption dans l'infrarouge des complexes par transfert de charge formés en solution par les halogènes avec différents donneurs d'électron
In: Bulletin de la Classe des sciences, Band 56, Heft 1, S. 818-845
Infrared absorption spectrometry offers an excellent way for studying the donor-acceptor complexes with halogens as electron acceptors, as the stretching vibration of the halogen molecule becomes active in infrared in such kind of complexes.
We have studied the position in frequency and the intensity of the halogen stretching vibration band for the complexes of bromine and iodine with benzene and some of its halogenated and methylated derivatives and of iodine with different donors, especially amines and organic sulfur derivatives.
It is shown that the intensity of this band appears to be a characteristic of the donor-acceptor interaction much more sensitive than the frequency shift and can be correctly evaluated from the molecular properties of the partners on the basis of the theory proposed by Person and al.