IR-Spektroskopische Untersuchungen am System Tetrazoliumsalz-Formazan-II. IR-Spektren von Triaryltetrazoliumperchloraten im Bereich von 4000–600 cm−1

Infrared absorption spectra of 33 systematically substituted triaryltetrazolium perchlorates have been analyzed, in order to find empirical assignments and to get informations about the molecular structure. The frequency shifts and the changes in the intensity of absorption have been discussed as a function of the changes in electron density due to the mesomerio and/or inductive effect of the substituents.