ScI3

Scandium triiodide · Scandium(III) iodide

Scandium triiodide is a stable, semiconducting halide material primarily utilized as a chemical additive in high-performance lighting technologies.

ISc
Crystal structure of ScI3
Ground-state structure · Materials Project
Overview

About Scandium triiodide

Scandium triiodide is a semiconducting inorganic compound that exhibits notable thermodynamic stability. As a member of the scandium halide family, it is recognized for its role in high-intensity discharge lamps where it acts as a crucial additive to improve light quality and efficiency. Its structural integrity is well-documented across multiple databases, reflecting its importance in materials science research. Beyond lighting, it serves as a valuable precursor in the synthesis of other scandium-containing materials and organometallic complexes. Its electronic character makes it an interesting subject for studies involving metal-halide interactions and solid-state chemistry.

At a glance

Key Properties

Cross-validated computational properties for Scandium triiodide, aggregated across 3 databases.

Band Gap

1.69 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

27
3 databases, 9 space groups
Uses

Applications

Where Scandium triiodide is used.

High-intensity discharge lampsMetal halide lampsChemical synthesis precursorOrganometallic research
Reference

Frequently Asked Questions

Common questions about Scandium triiodide, answered from cross-validated data.

What is ScI3?

Scandium triiodide is a stable, semiconducting halide material primarily utilized as a chemical additive in high-performance lighting technologies.

More questions
What is ScI3 used for?
Scandium triiodide (ScI3) is used in high-intensity discharge lamps, metal halide lamps, chemical synthesis precursor, and organometallic research.
What is the band gap of ScI3?
Scandium triiodide (ScI3) has a DFT-computed band gap of 1.69 eV across 27 reported structures.
Is ScI3 a metal, semiconductor, or insulator?
With a band gap up to 1.69 eV it is a semiconductor.
Is ScI3 thermodynamically stable?
Yes — Scandium triiodide (ScI3) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of ScI3 are known?
27 structures of ScI3 are reported across 3 databases, spanning 9 distinct space groups.
What elements does ScI3 contain?
Scandium triiodide (ScI3) contains I and Sc (2 elements).
Where does the data for ScI3 come from?
ScI3 data is cross-referenced from latticegraph.
Comparison

How It Compares

As a stable scandium halide, this compound represents a fundamental building block in the study of group 3 iodides. While it stands as a distinct entity within the broader landscape of metal halides, its behavior provides critical insights into the coordination chemistry and thermal properties characteristic of trivalent scandium species.

Data sources & attribution
  • latticegraph — Lattice Graph Materials Intelligence Platform

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