UBr4
uranium tetrabromide · uranium(IV) bromide
Uranium tetrabromide is a stable, semiconducting inorganic halide compound primarily used in specialized chemical synthesis and actinide research.

About uranium tetrabromide
Uranium tetrabromide is a crystalline halide compound characterized by its semiconducting electronic behavior. As a thermodynamically stable phase residing on the convex hull, it represents a well-defined state of uranium in the plus-four oxidation state. Its structural integrity makes it a subject of interest for fundamental studies in actinide materials science.
This compound is primarily utilized in advanced chemical research and as a precursor for the synthesis of organometallic uranium complexes. Its ability to participate in specific coordination environments allows researchers to probe the bonding characteristics of heavy elements within a stable inorganic framework.
Key Properties
Cross-validated computational properties for uranium tetrabromide, aggregated across 3 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Applications
Where uranium tetrabromide is used.
Frequently Asked Questions
Common questions about uranium tetrabromide, answered from cross-validated data.
What is UBr4?
Uranium tetrabromide is a stable, semiconducting inorganic halide compound primarily used in specialized chemical synthesis and actinide research.
What is UBr4 used for?
What is the band gap of UBr4?
Is UBr4 a metal, semiconductor, or insulator?
Is UBr4 thermodynamically stable?
How many polymorphs of UBr4 are known?
What elements does UBr4 contain?
Where does the data for UBr4 come from?
How It Compares
As a distinct actinide halide, uranium tetrabromide serves as a foundational reference point for understanding the behavior of heavy metal bromides. It occupies a unique niche in inorganic chemistry, providing a stable platform for investigating the electronic and structural trends that govern the reactivity of uranium-based compounds.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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