Br

Bromine · liquid bromine, Br2

Bromine is a reactive, semiconducting halogen element that serves as a vital precursor in numerous industrial and chemical applications.

Br
Crystal structure of Br
Ground-state structure · Materials Project
Overview

About Bromine

Bromine is a highly reactive halogen that exists as a semiconducting element. Its position on the convex hull confirms its thermodynamic stability, making it a fundamental building block in inorganic and organic chemistry.

Due to its unique electronic properties, bromine is widely utilized in the synthesis of flame retardants, water treatment agents, and various pharmaceutical intermediates. Its versatility stems from its ability to easily participate in redox reactions.

At a glance

Key Properties

Cross-validated computational properties for Bromine, aggregated across 5 databases.

Band Gap

1.33–1.69 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
3 DFT sources

Structures

34
5 databases, 10 space groups
Validation

Cross-Source DFT Agreement

How well independent DFT databases agree on the thermodynamics of Br. Tight agreement means computed properties can be trusted without re-running calculations.

Agreement Score

1.00 / 1.00
Trust tier: high

Hull Spread

0.000 eV
EAH spread across sources

Sources Compared

3
jarvis, materials_project, nomad

Space Group Consensus

All match
Synthesis

Synthesis Routes

Literature-extracted synthesis procedures targeting Br.

Sol Gel
Procedure available · ceder_sol_gel
Sol Gel
Procedure available · ceder_sol_gel
Sol Gel
Procedure available · ceder_sol_gel
Sol Gel
Procedure available · ceder_sol_gel
Sol Gel
Procedure available · ceder_sol_gel
Solid State
Procedure available · ceder_solid_state
Uses

Applications

Where Bromine is used.

Flame retardantsWater purificationPharmaceutical synthesisAgricultural chemicalsPhotography
Reference

Frequently Asked Questions

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

What is Br?

Bromine is a reactive, semiconducting halogen element that serves as a vital precursor in numerous industrial and chemical applications.

More questions
What is Br used for?
Bromine (Br) is used in flame retardants, water purification, pharmaceutical synthesis, agricultural chemicals, and photography.
What is the band gap of Br?
Bromine (Br) has a DFT-computed band gap of 1.33–1.69 eV across 34 reported structures.
Is Br a metal, semiconductor, or insulator?
With a band gap up to 1.69 eV it is a semiconductor.
Is Br thermodynamically stable?
Yes — Bromine (Br) sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
How many polymorphs of Br are known?
34 structures of Br are reported across 5 databases, spanning 10 distinct space groups.
How is Br synthesized?
Literature-reported routes for Br include sol gel, solid state (10 procedures documented).
What elements does Br contain?
Bromine (Br) contains Br (1 element).
Where does the data for Br come from?
Br data is cross-referenced from latticegraph.
Comparison

How It Compares

As a fundamental elemental halogen, bromine serves as a primary reference point for its group, defining the chemical behavior and reactivity trends observed across the halogen family.

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

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