Crystal and molecular structure of di-(2,2?-pyridylpyridinium)tetrachlorodioxouranate (VI)

Abstract

The authors interest is concerned with the study of the optical behavior (polarized absorption and luminescence electronic spectra) of single crystals of the type (R/sub 4/N)/sub 2/UO/sub 2/X/sub 4/ (R = alkyl or aryl group and X = Cl, Br), in relation to their structural properties, and in particular with the elucidation of the effects of the arrangement of the equatorial ligands and of an axial crystal field on the electronic structure of the UO/sub 2//sup 2 +/ ion. The aim of this work is the determination of the crystal structure of the title compound in order to interpretate its low-temperature absorption and luminescence spectra.