IR-Spektren kristalliner, wasserfreier Permanganate, Pertechnetate und Perrhenate

Abstract

The infrared absorption frequencies in the region of the MeO4 ⊖ fundamental vibrations are reported for several crystalline permanganates, pertechnetates, and perrhenates. On the basis of the IR spectra of the crystals and of additional considerations correct frequencies are assigned to the ν2(E) vibrations of the MeO4 ⊖ tetrahedra. The influence of the crystal field on the fundamental vibrations of the MnO4 ⊖, TcO4 ⊖, and ReO4 ⊖ ions is discussed, using site group analysis and factor group considerations.