Mg2P2O7
magnesium pyrophosphate · magnesium diphosphate
Magnesium pyrophosphate is a stable, insulating magnesium-based phosphate used primarily in advanced ceramic and optical material applications.
About magnesium pyrophosphate
Magnesium pyrophosphate is a thermodynamically stable inorganic compound composed of magnesium, phosphorus, and oxygen. As a wide-gap insulator, it exhibits excellent dielectric properties and structural integrity, making it a reliable material for high-temperature environments.
Its chemical stability ensures that it remains robust under various processing conditions, which is essential for its utility in technical ceramics. The compound is well-documented in materials databases, reflecting its importance in fundamental solid-state research and industrial synthesis.
Key Properties
Cross-validated computational properties for magnesium pyrophosphate, 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.
Reported Structures
Lowest-energy structures reported for Mg2P2O7, 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. |
|---|---|---|---|---|---|
| P21/c (No. 14) | monoclinic | 5.14 | 0.0000 | -7.410 | 3.11 |
| C2/m (No. 12) | monoclinic | 5.32 | 0.0027 | -7.407 | 3.17 |
| C2/m (No. 12) | Monoclinic | — | — | — | 3.05 |
| C2/m (No. 12) | Monoclinic | — | — | — | 3.26 |
| C2/m (No. 12) | — | — | — | — | — |
| C2/m (No. 12) | Monoclinic | — | — | — | 3.11 |
| No. 0 | unknown | — | — | — | 0.78 |
Applications
Where magnesium pyrophosphate is used.
Frequently Asked Questions
Common questions about magnesium pyrophosphate, answered from cross-validated data.
What is Mg2P2O7?
Magnesium pyrophosphate is a stable, insulating magnesium-based phosphate used primarily in advanced ceramic and optical material applications.
What is Mg2P2O7 used for?
What is the band gap of Mg2P2O7?
Is Mg2P2O7 a metal, semiconductor, or insulator?
Is Mg2P2O7 thermodynamically stable?
What is the crystal structure of Mg2P2O7?
What is the density of Mg2P2O7?
How many polymorphs of Mg2P2O7 are known?
What elements does Mg2P2O7 contain?
Where does the data for Mg2P2O7 come from?
How It Compares
As a stable magnesium-based phosphate, this compound serves as a foundational example of the pyrophosphate family, characterized by its reliable structural phase behavior and insulating electronic nature compared to more reactive or conductive phosphate variants.
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).
Analyze Mg2P2O7 in the Lattice Graph platform
Polymorph comparison, confidence scoring, supply-chain risk, and patent monitoring — across 53 integrated data sources.
Explore the Platform →