MnI2
manganese(II) iodide · manganous iodide
Manganese(II) iodide is a stable semiconducting metal halide used primarily as a chemical precursor and in specialized industrial applications.

About manganese(II) iodide
Manganese(II) iodide is a semiconducting inorganic compound that exists as a thermodynamically stable phase on the convex hull. Its structural versatility is evidenced by the numerous reported configurations found across major materials databases, reflecting its complex coordination chemistry.
This material serves as a critical precursor in various chemical synthesis pathways and is valued for its role in specialized lighting technologies. Its electronic properties and stability make it a subject of ongoing interest for researchers investigating metal-halide systems.
Key Properties
Cross-validated computational properties for manganese(II) iodide, 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 manganese(II) iodide is used.
Frequently Asked Questions
Common questions about manganese(II) iodide, answered from cross-validated data.
What is MnI2?
Manganese(II) iodide is a stable semiconducting metal halide used primarily as a chemical precursor and in specialized industrial applications.
What is MnI2 used for?
What is the band gap of MnI2?
Is MnI2 a metal, semiconductor, or insulator?
Is MnI2 thermodynamically stable?
How many polymorphs of MnI2 are known?
What elements does MnI2 contain?
Where does the data for MnI2 come from?
How It Compares
As a stable binary halide, manganese(II) iodide represents a fundamental building block in the study of transition metal iodides. It serves as a key reference point for understanding the structural and electronic trends within the broader class of manganese-based halide materials.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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