MnSe2

MnSe2 is a metastable, metallic manganese selenide compound that is extensively documented in structural databases for its diverse phase configurations.

MnSe
Crystal structure of MnSe2
Ground-state structure · Materials Project
Overview

About MnSe2

MnSe2 is a manganese selenide compound characterized by its metallic electronic nature. As a metastable material, it represents a complex phase space that has attracted significant attention, evidenced by its high structural density across multiple materials databases. Its unique bonding environment makes it a subject of interest for fundamental studies in transition metal chalcogenides. Because of its metallic character, it serves as a platform for investigating electronic transport properties in non-stoichiometric or metastable systems. Researchers utilize this compound to understand the interplay between manganese and selenium in configurations that deviate from traditional thermodynamic equilibrium.

At a glance

Key Properties

Cross-validated computational properties for MnSe2, aggregated across 4 databases.

Band Gap

Metallic / not reported

Energy Above Hull

0.069 eV/atom
Best (lowest) across sources

Stability

Metastable
3 DFT sources

Structures

50
4 databases, 19 space groups
Synthesis

Synthesis Routes

Literature-extracted synthesis procedures targeting MnSe2.

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

Applications

Where MnSe2 is used.

Materials science researchSolid-state chemistry studiesElectronic property investigation
Reference

Frequently Asked Questions

Common questions about MnSe2, answered from cross-validated data.

What is MnSe2?

MnSe2 is a metastable, metallic manganese selenide compound that is extensively documented in structural databases for its diverse phase configurations.

More questions
What is MnSe2 used for?
MnSe2 is used in materials science research, solid-state chemistry studies, and electronic property investigation.
What is the band gap of MnSe2?
MnSe2 is computed to be metallic (no band gap) in the reported DFT structures.
Is MnSe2 a metal, semiconductor, or insulator?
Computed band structures report no gap, so it is metallic.
Is MnSe2 thermodynamically stable?
MnSe2 has a lowest energy above hull of 0.069 eV/atom (metastable).
How many polymorphs of MnSe2 are known?
50 structures of MnSe2 are reported across 4 databases, spanning 19 distinct space groups.
How is MnSe2 synthesized?
Literature-reported routes for MnSe2 include sol gel, solid state (2 procedures documented).
What elements does MnSe2 contain?
MnSe2 contains Mn and Se (2 elements).
Where does the data for MnSe2 come from?
MnSe2 data is cross-referenced from latticegraph.
Comparison

How It Compares

As a standalone representative of this specific composition, MnSe2 occupies a unique niche in the study of manganese-based chalcogenides. Unlike more common, thermodynamically stable phases, its metastable nature allows for the exploration of structural motifs that are not easily accessible in more conventional materials, providing a critical reference point for understanding the limits of phase stability in binary metal-selenium systems.

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

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