H9BrO4

H9BrO4 is a thermodynamically stable, wide-band-gap insulating compound composed of bromine, hydrogen, and oxygen.

BrHO
Crystal structure of H9BrO4 (monoclinic, P21 (No. 4))
Ground-state structure · Materials Project
Overview

About H9BrO4

H9BrO4 is a distinct chemical compound composed of bromine, hydrogen, and oxygen. As a thermodynamically stable material located on the convex hull, it represents a robust configuration within its structural landscape, characterized by its wide-band-gap insulating electronic nature.

Its structural complexity is evidenced by a significant number of reported configurations across material databases. This diversity highlights its versatility and potential utility in specialized research applications where stable, insulating materials are required for fundamental studies.

At a glance

Key Properties

Cross-validated computational properties for H9BrO4, aggregated across 2 databases.

Band Gap

0.08–4.99 eV
Range across DFT structures

Energy Above Hull

0.000 eV/atom
Best (lowest) across sources

Stability

On hull (stable)
1 DFT source

Structures

14
2 databases, 2 space groups
Crystallography

Reported Structures

Lowest-energy structures reported for H9BrO4, ranked by energy above hull.

Space GroupCrystal SystemBand Gap (eV)E above hull (eV/atom)E/atom (eV)Density (g/cm³)
P21 (No. 4)monoclinic4.990.0000-5.8541.90
P1 (No. 1)triclinic4.680.0000-4.9041.82
P21 (No. 4)monoclinic4.330.0089-4.8951.75
P1 (No. 1)triclinic3.680.0176-4.8871.74
P21 (No. 4)monoclinic4.240.0179-4.8861.80
P1 (No. 1)triclinic4.320.0202-4.8841.78
P21 (No. 4)monoclinic4.440.0224-4.8821.73
P21 (No. 4)monoclinic4.170.0244-4.8801.66
P1 (No. 1)triclinic4.370.0257-4.8781.70
P21 (No. 4)monoclinic4.070.0280-4.8761.80
P21 (No. 4)monoclinic3.490.0500-4.8541.74
P1 (No. 1)triclinic0.081.1827-3.7211.74
Reference

Frequently Asked Questions

Common questions about H9BrO4, answered from cross-validated data.

What is H9BrO4?

H9BrO4 is a thermodynamically stable, wide-band-gap insulating compound composed of bromine, hydrogen, and oxygen.

More questions
What is the band gap of H9BrO4?
H9BrO4 has a DFT-computed band gap of 0.08–4.99 eV across 14 reported structures.
Is H9BrO4 a metal, semiconductor, or insulator?
With a wide band gap up to 4.99 eV it is an insulator / wide-band-gap material.
Is H9BrO4 thermodynamically stable?
Yes — H9BrO4 sits on the convex hull (energy above hull 0 eV/atom), i.e. on hull (stable).
What is the crystal structure of H9BrO4?
The lowest-energy reported polymorph of H9BrO4 is monoclinic symmetry, space group P21 (No. 4).
What is the density of H9BrO4?
The computed density of the ground-state structure of H9BrO4 is 1.90 g/cm³.
How many polymorphs of H9BrO4 are known?
14 structures of H9BrO4 are reported across 2 databases, spanning 2 distinct space groups.
What elements does H9BrO4 contain?
H9BrO4 contains Br, H, and O (3 elements).
Where does the data for H9BrO4 come from?
H9BrO4 data is cross-referenced from materials_project, jarvis.
Comparison

How It Compares

As a unique entry in this chemical space, H9BrO4 serves as a foundational reference point for understanding the behavior of hydrogen-rich brominated oxides, providing a stable baseline for future investigations into similar insulating materials.

Data sources & attribution
  • materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
  • jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).

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