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uranium sulfide is a uranium molecule that forms an oxidation state +4 when it reacts with sulfur. This is a relatively mobile uranium compound and can be toxic to living organisms. This compound can be produced in a wide range of oxidation states from U3+ to U6+.
Synthetic uranium sulfide compounds are produced by the reaction of uranium with an alkaline source. The resulting sulfate complexes are soluble in water or acid, and are suitable for use in water treatment and some industrial applications.
Various uranium sulfate compounds are available in bulk, submicron and nanopowder forms. Some can be sputtered onto sputtering targets, while others may be used as an evaporation material.
A number of uranium sulfide species can be prepared by reaction with an alkaline sulfate source, such as potassium sulfate. This is a highly efficient synthetic route for preparing complexes that are compatible with sulfate compounds and can be readily handled in the laboratory.
This process has been successfully applied to the preparation of a dimeric U(IV) persulfide complex, [
The crystallographic structure of this complex is consistent with ESI+, showing that both U(IV) and the [U(OSi(OtBu)3)3K] moieties are bridged by three sulfur atoms. The HOMO-1 and HOMO-2 orbitals exhibit 14% and 12% uranium character, respectively, and 82% sulfur character, with a low Wiberg bond order of 1.39 for the U-S bond.