H2W
H2W is a metallic tungsten hydride that exists as a metastable phase with a wide variety of documented structural arrangements.
About H2W
H2W is a metallic hydride compound composed of tungsten and hydrogen. As a metallic system, it exhibits conductive behavior typical of transition metal-hydrogen phases, making it a subject of interest for fundamental studies in condensed matter physics and high-pressure chemistry. Despite its metallic nature, the compound is characterized as thermodynamically unstable, existing above the energy hull. Its structural complexity is evidenced by a significant number of reported configurations across various databases, highlighting its role as a transient or metastable phase in complex synthesis environments.
Key Properties
Cross-validated computational properties for H2W, aggregated across 4 databases.
Band GapEnergy needed to move an electron from the valence band to the conduction band. Lower or zero values tend to behave more metallic; larger gaps are more insulating or semiconducting.
Energy Above HullThermodynamic distance from the most stable set of competing phases. 0 eV/atom is on the convex hull; small positive values may still be experimentally accessible.
StabilityA plain-language summary of the best reported energy-above-hull result. It reflects whether the lowest-energy structure is on, near, or far from the stability hull.
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
Applications
Where H2W is used.
Frequently Asked Questions
Common questions about H2W, answered from cross-validated data.
What is H2W?
H2W is a metallic tungsten hydride that exists as a metastable phase with a wide variety of documented structural arrangements.
What is H2W used for?
What is the band gap of H2W?
Is H2W a metal, semiconductor, or insulator?
Is H2W thermodynamically stable?
How many polymorphs of H2W are known?
What elements does H2W contain?
Where does the data for H2W come from?
How It Compares
As a unique metallic hydride, H2W represents a specialized area of study within transition metal-hydrogen systems, where the interplay between tungsten and hydrogen bonding dictates its structural diversity and relative instability compared to more robust, ground-state hydride phases.
Data sources & attribution
- latticegraph — Lattice Graph Materials Intelligence Platform
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