Sr2I2O

Sr2I2O is a thermodynamically stable, wide-band-gap insulating material composed of strontium, iodine, and oxygen.

IOSr
Crystal structure of Sr2I2O
Ground-state structure · Materials Project
Overview

About Sr2I2O

Sr2I2O is a thermodynamically stable compound that exhibits wide-band-gap insulating behavior. Its structural configuration places it firmly on the convex hull, indicating a high degree of stability under standard conditions. The material is characterized by its distinct electronic properties, which are typical of insulating oxides and halides.

As a material of interest in solid-state chemistry, Sr2I2O is studied for its unique atomic arrangement and potential for specialized applications. Its stability and insulating nature make it a candidate for research into dielectric materials and other electronic components where wide-gap insulators are required.

At a glance

Key Properties

Cross-validated computational properties for Sr2I2O, aggregated across 4 databases.

Band Gap

3.28 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

6
4 databases, 2 space groups
Uses

Applications

Where Sr2I2O is used.

Dielectric researchSolid-state electronic componentsMaterials science research
Reference

Frequently Asked Questions

Common questions about Sr2I2O, answered from cross-validated data.

What is Sr2I2O?

Sr2I2O is a thermodynamically stable, wide-band-gap insulating material composed of strontium, iodine, and oxygen.

More questions
What is Sr2I2O used for?
Sr2I2O is used in dielectric research, solid-state electronic components, and materials science research.
What is the band gap of Sr2I2O?
Sr2I2O has a DFT-computed band gap of 3.28 eV across 6 reported structures.
Is Sr2I2O a metal, semiconductor, or insulator?
With a wide band gap up to 3.28 eV it is an insulator / wide-band-gap material.
Is Sr2I2O thermodynamically stable?
Yes — Sr2I2O sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of Sr2I2O are known?
6 structures of Sr2I2O are reported across 4 databases, spanning 2 distinct space groups.
What elements does Sr2I2O contain?
Sr2I2O contains I, O, and Sr (3 elements).
Where does the data for Sr2I2O come from?
Sr2I2O data is cross-referenced from latticegraph.
Comparison

How It Compares

As a unique inorganic compound, Sr2I2O serves as a distinct example of stable strontium-based oxyhalides. While it does not share its specific structural class with other common compounds in this database, it stands as a fundamental reference point for understanding the interplay between strontium, iodine, and oxygen in stable crystalline lattices.

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

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