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Uranium compounds are compounds formed by the element uranium (U). Although uranium is a radioactive actinide , its compounds are well studied due to its long half-life and its applications. It usually forms in the +4 and +6 oxidation states , although it can also form in other oxidation states.
Uranyl sulfate describes a family of inorganic compounds with the formula UO 2 SO 4 (H 2 O) n. These salts consist of sulfate, the uranyl ion, and water. They are lemon-yellow solids. Uranyl sulfates are intermediates in some extraction methods used for uranium ores. [1] These compounds can also take the form of an anhydrous salt.
Uranyl nitrate is a water-soluble yellow uranium salt with the formula UO 2 (NO 3) 2 · n H 2 O. The hexa-, tri-, and dihydrates are known. [3] The compound is mainly of interest because it is an intermediate in the preparation of nuclear fuels. In the nuclear industry, it is commonly referred to as yellow salt.
Compounds containing the uranyl ion are usually yellow, though some compounds are red, orange or green. [citation needed] Uranyl compounds also exhibit luminescence. The first study of the green luminescence of uranium glass, by Brewster [7] in 1849, began extensive studies of the spectroscopy of the uranyl ion.
Uranyl carbonate refers to the inorganic compound with the formula UO 2 CO 3. Also known by its mineral name rutherfordine , this material consists of uranyl (UO 2 2+ ) and carbonate (CO 3 2- ). Like most uranyl salts, the compound is a polymeric, each uranium(VI) center being bonded to eight O atoms. [ 1 ]
Uranyl fluoride is the inorganic compound with the formula UO 2 F 2. It is most notable as a contaminant in the production of uranium tetrafluoride. [1] As shown by X-ray crystallography, the uranyl (UO 2 2+) centers are complemented by six fluoride ligands. [2] This salt is very soluble in water as well as hygroscopic.
List of compounds containing uranium. Subcategories. This category has the following 7 subcategories, out of 7 total. ... Pages in category "Uranium compounds"
The anhydrous material can be obtained by the reaction of oxygen with uranium tetrachloride: UCl 4 + O 2 → UO 2 Cl 2 + Cl 2. In terms of structures, all three of these compounds feature the uranyl center (trans-UO 2 2+) bound to five additional ligands, which can include (bridging) chloride, water, or another uranyl oxygen. [4] [5]