AgClO4
Silver perchlorate · Perchloric acid silver salt
Silver perchlorate is an insulating, stable inorganic salt primarily used as a versatile reagent in chemical synthesis and laboratory applications.

About Silver perchlorate
Silver perchlorate is a well-characterized inorganic compound that exists as a thermodynamically stable phase. Its electronic structure is defined by a wide band gap, classifying it as an insulator under standard conditions.
Due to its high solubility and reactivity, it serves as a critical reagent in organic and inorganic synthesis. It is frequently employed in laboratories to facilitate the precipitation of halides or to act as a source of silver ions in complex chemical transformations.
Key Properties
Cross-validated computational properties for Silver perchlorate, aggregated across 6 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.
Cross-Source DFT Agreement
How well independent DFT databases agree on the thermodynamics of AgClO4. Tight agreement means computed properties can be trusted without re-running calculations.
Agreement ScoreA normalized confidence score summarizing how closely independent DFT databases agree. Higher scores mean tighter cross-source agreement.
Hull SpreadDifference between the highest and lowest energy-above-hull values reported by comparable sources. Smaller spread means less thermodynamic disagreement.
Sources ComparedNumber and names of computational sources with comparable entries for this formula.
Space Group ConsensusWhether independent sources predict the same crystal symmetry for the lowest-energy structure.
Reported Structures
Lowest-energy structures reported for AgClO4, 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. |
|---|---|---|---|---|---|
| — | — | 2.86 | 0.0000 | -0.281 | — |
| I-42m (No. 121) | tetragonal | 2.61 | 0.0000 | -4.495 | 4.23 |
| P21/m (No. 11) | monoclinic | 3.29 | 0.0077 | -4.487 | 4.17 |
| Pnma (No. 62) | orthorhombic | 2.68 | 0.0255 | -4.469 | 4.12 |
| — | — | 2.75 | 0.0358 | -0.246 | — |
| P21/m (No. 11) | monoclinic | 2.85 | 0.0437 | -4.451 | 4.03 |
| F-43m (No. 216) | cubic | 2.37 | 0.1166 | -4.378 | 3.48 |
| — | — | 2.75 | 0.1322 | -0.149 | — |
| I-42m (No. 121) | tetragonal | 2.51 | 0.2221 | 0.057 | — |
| I-42m (No. 121) | tetragonal | 2.51 | 0.2221 | 0.057 | — |
| I-42m (No. 121) | tetragonal | 2.51 | 0.2222 | 0.057 | — |
| I-42m (No. 121) | tetragonal | 2.51 | 0.2222 | 0.057 | — |
Applications
Where Silver perchlorate is used.
Frequently Asked Questions
Common questions about Silver perchlorate, answered from cross-validated data.
What is AgClO4?
Silver perchlorate is an insulating, stable inorganic salt primarily used as a versatile reagent in chemical synthesis and laboratory applications.
What is AgClO4 used for?
What is the band gap of AgClO4?
Is AgClO4 a metal, semiconductor, or insulator?
Is AgClO4 thermodynamically stable?
What is the crystal structure of AgClO4?
What is the density of AgClO4?
How many polymorphs of AgClO4 are known?
What elements does AgClO4 contain?
Where does the data for AgClO4 come from?
How It Compares
As a distinct inorganic salt, silver perchlorate occupies a unique role in chemical synthesis compared to other silver-based compounds. While many silver salts are valued for their stability or conductivity, this compound is specifically prized for its high solubility in both aqueous and organic solvents, making it a versatile tool for synthetic chemists.
Data sources & attribution
- oqmd — Data from the OQMD (oqmd.org). Cite: Saal et al., JOM 65, 1501 (2013); Kirklin et al., npj Comp. Mater. 1, 15010 (2015). (CC-BY-4.0)
- materials_project — Data from the Materials Project (materialsproject.org). Cite: Jain et al., APL Materials 1, 011002 (2013). (CC-BY-4.0)
- jarvis — Data from JARVIS (jarvis.nist.gov), NIST. Cite: Choudhary et al., npj Comp. Mater. 6, 173 (2020). (LicenseRef-US-Gov-PD)
- mpaloe — Data from MP-ALOE. Cite: Kuner et al., npj Comput. Mater. (2025), doi:10.1038/s41524-025-01834-9.
- cod — Data from the Crystallography Open Database (crystallography.net/cod/). Cite: Grazulis et al., J. Appl. Cryst. 42, 726 (2009). (CC0-1.0)
- nomad — Data from NOMAD (nomad-lab.eu). Cite: Draxl & Scheffler, J. Phys. Mater. 2, 036001 (2019). (CC-BY-4.0)
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