PBr2
PBr2 is a semiconducting phosphorus-bromide compound that exists in a metastable state.
About PBr2
PBr2 is a phosphorus-bromine compound characterized by semiconducting electronic properties. As a binary halide, it represents a unique intersection of pnictogen and halogen chemistry, serving as a subject of interest for fundamental structural research.
Despite its existence in multiple reported structural configurations, the compound is identified as being above the thermodynamic hull. This suggests that while it can be synthesized or modeled, it is inherently metastable compared to more stable phosphorus-bromide phases.
Key Properties
Cross-validated computational properties for PBr2, 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.
Frequently Asked Questions
Common questions about PBr2, answered from cross-validated data.
What is PBr2?
PBr2 is a semiconducting phosphorus-bromide compound that exists in a metastable state.
What is the band gap of PBr2?
Is PBr2 a metal, semiconductor, or insulator?
Is PBr2 thermodynamically stable?
How many polymorphs of PBr2 are known?
What elements does PBr2 contain?
Where does the data for PBr2 come from?
How It Compares
As a unique binary phosphorus bromide, PBr2 functions as a specialized member of the phosphorus-halide family, representing a niche structural arrangement that differs significantly from the more common and thermodynamically favored phosphorus trihalides.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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