RbI3

RbI3 is a thermodynamically stable, semiconducting rubidium triiodide compound known for its extensive structural complexity.

IRb
Crystal structure of RbI3
Ground-state structure · Materials Project
Overview

About RbI3

Rubidium triiodide is a thermodynamically stable compound that exists securely on the convex hull of its constituent elements. As a semiconducting material, it represents a significant subject of study within the broader landscape of alkali metal polyiodides, characterized by its complex structural arrangements.

With dozens of reported structures documented across major materials databases, this compound is highly data-rich. Its stability and electronic properties make it a compelling candidate for fundamental research into the behavior of iodine-rich frameworks and their potential for specialized electronic applications.

At a glance

Key Properties

Cross-validated computational properties for RbI3, aggregated across 3 databases.

Band Gap

1.63 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

39
3 databases, 10 space groups
Reference

Frequently Asked Questions

Common questions about RbI3, answered from cross-validated data.

What is RbI3?

RbI3 is a thermodynamically stable, semiconducting rubidium triiodide compound known for its extensive structural complexity.

More questions
What is the band gap of RbI3?
RbI3 has a DFT-computed band gap of 1.63 eV across 39 reported structures.
Is RbI3 a metal, semiconductor, or insulator?
With a band gap up to 1.63 eV it is a semiconductor.
Is RbI3 thermodynamically stable?
Yes — RbI3 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of RbI3 are known?
39 structures of RbI3 are reported across 3 databases, spanning 10 distinct space groups.
What elements does RbI3 contain?
RbI3 contains I and Rb (2 elements).
Where does the data for RbI3 come from?
RbI3 data is cross-referenced from latticegraph.
Comparison

How It Compares

As a distinct member of the alkali polyiodide family, RbI3 serves as a primary reference point for understanding the structural diversity and thermodynamic stability of iodine-rich inorganic solids.

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

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