ozonolysis
Very low (specialist term)Technical/Scientific (exclusively academic and research contexts)
Definition
Meaning
A chemical reaction in which ozone (O₃) cleaves carbon-carbon double or triple bonds in organic compounds, forming carbonyl compounds.
An analytical and synthetic technique in organic chemistry where ozone attacks unsaturated bonds, followed by a reductive or oxidative work-up to yield aldehydes, ketones, or carboxylic acids.
Linguistics
Semantic Notes
The term refers specifically to the process of bond cleavage by ozone, not just any reaction involving ozone. It's a compound of 'ozone' and 'lysis' (Greek for 'loosening' or 'breaking apart'). The focus is on the scission of the molecular structure.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning or usage. Spelling and pronunciation are consistent.
Connotations
None beyond its strict technical definition.
Frequency
Equally rare and confined to professional chemistry in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
The ozonolysis of [compound] yields [products].[Compound] undergoes ozonolysis to give [products].Vocabulary
Synonyms
Neutral
Weak
Usage
Context Usage
Business
Not used.
Academic
Exclusively used in advanced chemistry textbooks, research papers, and lectures on organic synthesis or analytical chemistry.
Everyday
Never used.
Technical
The primary context. Used in laboratory protocols, chemical patents, and specialized discussions among chemists.
Examples
By Part of Speech
verb
British English
- The alkene was ozonolysed to characterise its structure.
- We need to ozonolyse this sample before analysis.
American English
- The alkene was ozonolyzed to characterize its structure.
- We need to ozonolyze this sample before analysis.
adjective
British English
- The ozonolytic products were collected.
- An ozonolytic work-up is required.
American English
- The ozonolytic products were collected.
- An ozonolytic workup is required.
Examples
By CEFR Level
- Ozonolysis is an important reaction for determining the position of double bonds in organic molecules.
- Following reductive ozonolysis with dimethyl sulfide, the diketone was isolated in high yield.
- The synthetic route relied on a key ozonolysis step to cleave the cyclic alkene.
Learning
Memory Aids
Mnemonic
Think: 'OZONE' + 'LYSIS' (like analysis or hydrolysis). Ozone performs a splitting (lysis) of a chemical bond.
Conceptual Metaphor
A molecular scissor or cleaver; ozone acts as a precise blade that cuts double bonds.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid confusing with 'озонирование' (ozonation), which is a broader term for treatment with ozone. 'Озонолиз' is the direct, correct equivalent.
Common Mistakes
- Using 'ozonolysis' to refer to any reaction with ozone.
- Mispronouncing the stress (it's on the third syllable: -NOL-).
Practice
Quiz
What is the primary function of ozonolysis in organic chemistry?
FAQ
Frequently Asked Questions
Yes, it can be. Ozone is toxic and explosive in concentrated forms, and ozonides (intermediates) can be unstable. It must be performed with proper training and safety equipment, often at low temperatures.
Ozonation is a general term for treating a substance with ozone, often for disinfection or bleaching. Ozonolysis is a specific type of ozonation that results in the cleavage of carbon-carbon multiple bonds.
The carbonyl compounds produced (aldehydes, ketones) are useful building blocks in synthetic organic chemistry and are crucial for determining molecular structure in analytical chemistry.
Most isolated carbon-carbon double bonds react readily. Electron-rich double bonds react faster. It is less effective or may require modified conditions for highly electron-deficient or sterically hindered alkenes.