Non-stoichiometric Compound
| Also Known As | Berthollide compound, variable composition compound, defect compound, nonstoichiometric |
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What is Non-stoichiometric Compound?
A non-stoichiometric compound (or Berthollide compound) is a compound in which the ratio of elements is not a simple whole number. These compounds violate Dalton's Law of Definite Proportions. They occur mainly in transition metal oxides, sulfides, and other compounds where the metal can exist in multiple oxidation states, allowing variable compositions. Non-stoichiometry is responsible for important electronic and magnetic properties.
Properties & Characteristics
Uses & Applications
Safety Information
Always consult the SDS/MSDS before handling any chemical. This information is for educational purposes only.
Key Facts
Frequently Asked Questions
A non-stoichiometric compound (or Berthollide compound) is a compound in which the ratio of elements is not a simple whole number. These compounds violate Dalton's Law of Definite Proportions. They occur mainly in transition metal oxides, sulfides, and other compounds where the metal can exist in multiple oxidation states, allowing variable compositions. Non-stoichiometry is responsible for important electronic and magnetic properties.
Semiconductor technology. Catalysis (nonstoichiometric oxides as catalysts). Battery materials (Li intercalation compounds). Corrosion understanding (iron oxides). Ceramic materials. Hydrogen storage (non-stoichiometric metal hydrides). Magnetic materials.
Safety depends on specific compound. Variable composition means properties may not be predicted from simple formulas. Non-stoichiometric transition metal oxides and sulfides have individual toxicity profiles.