IrI3
IrI3 is a stable, semiconducting iridium iodide compound used in specialized catalytic research.

About IrI3
IrI3 is a thermodynamically stable compound within the platinum-group alloy catalyst family. As a semiconducting material, it exhibits distinct electronic properties that make it a subject of interest for specialized catalytic applications where precise charge transport is required.
Its structural diversity is evidenced by multiple reported configurations across major databases. This stability and electronic character position it as a foundational material for researchers investigating the intersection of noble metal chemistry and semiconductor physics.
Key Properties
Cross-validated computational properties for IrI3, 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 IrI3 is used.
Frequently Asked Questions
Common questions about IrI3, answered from cross-validated data.
What is IrI3?
IrI3 is a stable, semiconducting iridium iodide compound used in specialized catalytic research.
What is IrI3 used for?
What is the band gap of IrI3?
Is IrI3 a metal, semiconductor, or insulator?
Is IrI3 thermodynamically stable?
How many polymorphs of IrI3 are known?
What elements does IrI3 contain?
Where does the data for IrI3 come from?
How It Compares
Within the platinum-group alloy catalysts class.
Within the diverse family of platinum-group catalysts, IrI3 stands out for its halide-based composition compared to intermetallic siblings like As2Ir or LaRh. While many members of this class focus on metallic bonding, IrI3 occupies a unique niche as a semiconducting phase, offering different catalytic pathways than the more metallic-dominant structures such as P3Ru or GeRu.
Related Compounds
Other Platinum-Group Alloy Catalysts in the database.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
Analyze IrI3 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →