Spektroskopische Untersuchungen in der Festkörperchemie, XII* Re-NQR-und 1H-Breitlinien-NMR -Studien an Rhenium(YII)- Sauerstoffverbindungen / Spectroscopic Investigations in Solid State Chemistry, XII* Re NQR and 1H Wideline NMR Studies on Rhenium(VII) Oxygen Compounds

Abstract

The first Re NQR spectra of rhenium oxygen compounds with rhenium atoms in the pseudo-octahedral environment of Re2O7(H2O)2 and Re2O7(H2O)2 · 2(1,4)-dioxane were found. The values of the Re NQR coupling constants of these rhenium atoms are the highest measured until now. They show, that the gradient of the electrical field is much more sensitive to distortions of an octahedral crystal field than to distortions of a tetrahedral field.