WI2
Tungsten diiodide is a stable, semiconducting binary compound formed from tungsten and iodine that is frequently studied for its structural properties.
About WI2
Tungsten diiodide is a binary halide compound composed of tungsten and iodine. As a thermodynamically stable material situated on the convex hull, it represents a robust phase within the tungsten-iodine system. Its electronic character is defined as semiconducting, making it a subject of interest for fundamental studies in solid-state physics and materials science.
Given its status as a well-documented phase with numerous reported structures, this compound serves as a critical reference point for understanding metal-halide bonding and structural diversity. It is primarily utilized in research contexts to explore the behavior of transition metal iodides under varying conditions.
Key Properties
Cross-validated computational properties for WI2, 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 WI2 is used.
Frequently Asked Questions
Common questions about WI2, answered from cross-validated data.
What is WI2?
Tungsten diiodide is a stable, semiconducting binary compound formed from tungsten and iodine that is frequently studied for its structural properties.
What is WI2 used for?
What is the band gap of WI2?
Is WI2 a metal, semiconductor, or insulator?
Is WI2 thermodynamically stable?
How many polymorphs of WI2 are known?
What elements does WI2 contain?
Where does the data for WI2 come from?
How It Compares
As a distinct binary halide, tungsten diiodide occupies a unique position in the landscape of transition metal compounds. Without direct structural analogs in this immediate class, it stands as a primary example of how tungsten and iodine can form a stable, semiconducting lattice that maintains structural integrity across multiple reported configurations.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
Analyze WI2 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →