Methyl cyanide and NN-dimethylacetamide complexes of thorium and uranium tetrahalides, uranyl chloride, and uranyl bromide

Abstract

The tetrachloride and tetrabromide of thorium and of uranium react at room temperature with anhydrous methyl cyanide to form the complexes MX₄,4CH₃CN (M = Th and U; X = Cl and Br). The tetrabromide complexes react with NN-dimethylacetamide (DMA) to form the compounds MBr₄,4DMA. Methyl cyanide and DMA complexes of uranyl chloride and uranyl bromide, UO₂Cl₂,CH₃CN and UO₂X₂,2DMA (X = Cl and Br) have also been prepared. Some chemical properties, infrared spectra, and magnetic susceptibilities are reported for these complexes.