VSn2
VSn2 has a DFT band gap of Metallic / not reported across 33 reported structures in 10 space groups; its lowest-energy polymorph is orthorhombic (Fddd (No. 70)). Cross-validated across 4 computational databases.
At a glance
Key Properties
Cross-validated computational properties for VSn2, 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.
Metallic / not reported
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.
0.027 eV/atom
Best (lowest) across sources
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.
Metastable
2 DFT sources
StructuresCount of reported calculated crystal structures for this formula, including alternate polymorphs, source databases, and observed space groups.
33
4 databases, 10 space groups
Crystallography
Reported Structures
Lowest-energy structures reported for VSn2, ranked by energy above hull.
| Space GroupSymmetry classification of the crystal arrangement. The number is the international space-group index. | Crystal SystemBroad lattice family, such as cubic, tetragonal, monoclinic, or triclinic, derived from unit-cell symmetry. | Band Gap (eV)Electronic gap calculated for this specific reported structure, measured in electronvolts. | E above hull (eV/atom)Thermodynamic distance from the convex hull for this structure, normalized per atom. Lower is generally more stable. | E/atom (eV)Computed total energy normalized per atom. Use energy above hull, not this value alone, when comparing stability. | Density (g/cm³)Mass per relaxed crystal volume, reported in grams per cubic centimeter. |
|---|---|---|---|---|---|
| Fddd (No. 70) | orthorhombic | 0.00 | 0.0266 | -21.212 | 7.92 |
| Cm (No. 8) | Monoclinic | — | — | — | 4.76 |
| Fddd (No. 70) | Orthorhombic | — | — | — | 7.77 |
| P21/m (No. 11) | Monoclinic | — | — | — | 5.81 |
| P21/m (No. 11) | Monoclinic | — | — | — | 6.40 |
| P1 (No. 1) | Triclinic | — | — | — | 5.44 |
| P21 (No. 4) | Monoclinic | — | — | — | 5.48 |
| P1 (No. 1) | Triclinic | — | — | — | 5.55 |
| P-1 (No. 2) | Triclinic | — | — | — | 8.22 |
| P-1 (No. 2) | Triclinic | — | — | — | 6.27 |
| P-1 (No. 2) | Triclinic | — | — | — | 7.06 |
| P21/m (No. 11) | Monoclinic | — | — | — | 5.31 |
Reference
Frequently Asked Questions
Common questions about VSn2, answered from cross-validated data.
What is the band gap of VSn2?
VSn2 is computed to be metallic (no band gap) in the reported DFT structures.
More questions
Is VSn2 a metal, semiconductor, or insulator?
Computed band structures report no gap, so it is metallic.
Is VSn2 thermodynamically stable?
VSn2 has a lowest energy above hull of 0.027 eV/atom (metastable).
What is the crystal structure of VSn2?
The lowest-energy reported polymorph of VSn2 is orthorhombic symmetry, space group Fddd (No. 70).
What is the density of VSn2?
The computed density of the ground-state structure of VSn2 is 7.92 g/cm³.
How many polymorphs of VSn2 are known?
33 structures of VSn2 are reported across 4 databases, spanning 10 distinct space groups.
What elements does VSn2 contain?
VSn2 contains Sn and V (2 elements).
Where does the data for VSn2 come from?
VSn2 data is cross-referenced from materials_project, mpaloe, jarvis, cod.
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Related Compounds
Other A15 Superconductors in the database.
Data sources & attribution
- materials_project — Data from the Materials Project. Cite: Jain et al., APL Materials 1, 011002 (2013).
- mpaloe — Data from mpaloe.
- jarvis — Data from JARVIS (NIST). Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020).
- cod — Data from the Crystallography Open Database. Cite: Grazulis et al., Nucleic Acids Res. 40, D420 (2012).
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