RbAlF4

RbAlF4 is a stable, insulating ternary fluoride compound used primarily in foundational materials research.

AlFRb
Crystal structure of RbAlF4
Ground-state structure · Materials Project
Overview

About RbAlF4

RbAlF4 is a thermodynamically stable inorganic compound that exists on the convex hull, indicating significant structural robustness. As a wide-gap insulator, it exhibits the characteristic electronic properties typical of complex fluoride systems, making it a subject of interest for fundamental materials science studies.

With multiple reported structures across major databases, this compound serves as a key reference point for understanding the coordination chemistry of aluminum and rubidium within a fluoride framework. Its stability profile suggests potential utility in specialized dielectric applications or as a precursor in solid-state synthesis.

At a glance

Key Properties

Cross-validated computational properties for RbAlF4, aggregated across 3 databases.

Band Gap

6.88–6.96 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
2 DFT sources

Structures

10
3 databases, 6 space groups
Uses

Applications

Where RbAlF4 is used.

Solid-state chemistry researchDielectric materials developmentPrecursor for inorganic synthesis
Reference

Frequently Asked Questions

Common questions about RbAlF4, answered from cross-validated data.

What is RbAlF4?

RbAlF4 is a stable, insulating ternary fluoride compound used primarily in foundational materials research.

More questions
What is RbAlF4 used for?
RbAlF4 is used in solid-state chemistry research, dielectric materials development, and precursor for inorganic synthesis.
What is the band gap of RbAlF4?
RbAlF4 has a DFT-computed band gap of 6.88–6.96 eV across 10 reported structures.
Is RbAlF4 a metal, semiconductor, or insulator?
With a wide band gap up to 6.96 eV it is an insulator / wide-band-gap material.
Is RbAlF4 thermodynamically stable?
Yes — RbAlF4 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of RbAlF4 are known?
10 structures of RbAlF4 are reported across 3 databases, spanning 6 distinct space groups.
What elements does RbAlF4 contain?
RbAlF4 contains Al, F, and Rb (3 elements).
Where does the data for RbAlF4 come from?
RbAlF4 data is cross-referenced from latticegraph.
Comparison

How It Compares

As a distinct inorganic fluoride, RbAlF4 occupies a unique position in the landscape of aluminum-based ternary compounds. It serves as a representative example of how alkali metal incorporation stabilizes the aluminum-fluoride lattice, providing a baseline for studying structural diversity in related halide systems.

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

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