Spektroskopische Untersuchungen in der Festkörperchemie, X Re–NQR-Untersuchungen an TlReO4 und LiReO4 · 2 H2O / Spectroscopic Investigations in the Solid State Chemistry, X Re-NQR Investigations on TlReO4 and LiReO4 · 2 H2O

Abstract

The 187Re–NQR transitions of TlReO4 and their temperature dependencies were measured. In the temperature range, in which TlReO4 is crystallizing in pseudo scheelite structure, one obtains normal temperature coefficients with asymmetry parameters η = 0.3. For Τ < 200 Κ, however, another modification with η = 0 was found. For LiReO4 • 2 H2O complex 187Re and 185Re NQR spectra with 16 transition frequencies were measured and discussed.