Iron sulfide Fe2S3 and related compounds such as Fe2S4 draw attention in materials science and chemistry because of their distinctive electronic and structural behavior. The PubChem CID 165365662 entry for iron sulfide Fe2S3 provides a reliable reference point for researchers exploring these materials.
This article outlines key identifiers, property ranges, and application considerations for iron sulfide Fe2S3 and related iron sulfides. The information is organized to support quick scanning and deeper exploration of relevant data.
| Compound | CID | Common Name | Primary Use |
|---|---|---|---|
| Iron(III) sulfide | 165365662 | Fe2S3 | Research standard, precursor for sulfide catalysts |
| Iron sulfide mixed phase | 6444458 | FeS, FeS2 | Battery electrodes, mineral studies |
| Iron disulfide | 6445871 | FeS2 | Pyrite modeling, geological reference |
| Nonstoichiometric Fe2S4 | Not assigned | Fe2S4 | Advanced materials, theoretical studies |
Chemical Identity and Database Records
Precise Compound Identification
For iron sulfide Fe2S3, the PubChem CID 165365662 serves as a stable digital fingerprint. This identifier links to computed properties, spectral data, and safety records that support experimental reproducibility.
Cross referencing this CID with other databases helps validate molecular formulas, oxidation states, and crystallographic details. Consistent naming and structured records reduce ambiguity in collaborative and regulatory contexts.
Structural Characteristics and Crystal Data
Lattice Arrangements and Symmetry
Iron sulfide Fe2S3 typically adopts distorted cubic or orthorhombic lattice motifs, depending on synthesis conditions and sample history. Variations between Fe2S3 and mixed iron sulfides such as FeS or FeS2 highlight sensitivity to stoichiometry and thermal history.
Understanding space group, unit cell dimensions, and defect distributions is essential when correlating structure with magnetic or transport behavior. Reported lattice parameters support phase purity assessment in powder XRD studies.
Property Ranges and Experimental Relevance
Key Physical and Chemical Metrics
Computed and experimental ranges for iron sulfide Fe2S3 provide guidance for safe handling and application design. Property values can shift with particle size, hydration level, and synthetic route, so method details are critical for comparison.
Where direct measurements are sparse, PubChem and related repositories supply estimated band gaps, magnetic moments, and approximate thermal stability windows. These ranges inform the selection of Fe2S3 as a catalyst precursor or electrode material.
| Property | Typical Range | Reference Source | Measurement Notes |
|---|---|---|---|
| Molecular Weight (g/mol) | 207.5–208.5 | Computed | Based on Fe 55.845, S 32.06 |
| Estimated Band Gap (eV) | 1.2–2.0 | Computational models | Strong dependence on defect density |
| Magnetic Ordering | Antiferromagnetic/spin glass | Experimental studies | Below 10–50 K for bulk samples |
| Thermal Stability | Decomposition above 500 °C | Thermoanalytical data | Ambient atmosphere may induce oxidation |
| Solubility | Negligible in water and common organics | Database summaries | Acidic conditions promote dissolution |
Synthesis Routes and Handling Considerations
Preparation Methods and Quality Control
Iron sulfide Fe2S3 is often accessed via solid state reactions or precipitation from iron and sulfide precursors. Careful control of temperature, atmosphere, and reagent purity minimizes side phases such as FeS or FeS2.
Handling requires attention to moisture sensitivity and potential evolution of hydrogen sulfide under acidic conditions. Storage in dry, inert environments and use of appropriate personal protective equipment support safe laboratory practice.
Application Contexts and Research Trends
Energy Storage and Catalysis
In energy materials, iron sulfide Fe2S3 has been explored as an anode or conversion material in batteries, leveraging its multivalent iron chemistry. Its layered and defective structures can accommodate ion insertion while maintaining reasonable cycle life.
As a catalyst, Fe2S3 and related iron sulfides participate in hydrotreating, CO2 reduction, and organic transformations. Tuning particle size, support interaction, and surface sulfidation state helps align activity and selectivity with target reactions.
Key Takeaways and Recommended Practices
- Use PubChem CID 165365662 as a verified reference for iron sulfide Fe2S3 properties and identifiers.
- Confirm phase purity using XRD and complementary spectroscopic methods due to sensitivity to stoichiometry.
- Control synthesis atmosphere and temperature to minimize mixed FeS or FeS2 phases.
- Handle under dry conditions and follow safety protocols for sulfide materials to avoid H2S evolution.
- Evaluate application-specific performance metrics such as cycle stability, activity, and selectivity before scaling.
FAQ
Reader questions
How does Fe2S3 differ from FeS and FeS2 in terms of stability?
Fe2S3 is generally less stable in moist air and acidic media compared to FeS and FeS2, often transforming to mixed sulfides or oxides unless stabilized by specific synthesis and handling protocols.
What are typical experimental hazards associated with iron sulfide Fe2S3?
Potential hazards include release of hydrogen sulfide under acidic conditions, dust inhalation risks, and reactivity with oxidizers; appropriate ventilation, protective equipment, and controlled acidity are recommended.
Which characterization techniques are most reliable for confirming Fe2S3 phase purity?
Powder X-ray diffraction paired with Rietveld refinement, Raman spectroscopy, and Mössbauer or X-ray absorption spectroscopy provide complementary information on crystal structure and iron oxidation states.
Can Fe2S3 serve as a sustainable alternative to noble metal catalysts?
Emerging studies indicate that Fe2S3-based materials can achieve respectable activity in selected redox and coupling reactions, though performance varies strongly with preparation method and support choice.