kekule's formula
C2Technical, Academic
Definition
Meaning
A visual representation of the molecular structure of benzene, consisting of a hexagon with alternating single and double bonds.
The specific formula for benzene proposed by August Kekulé, which was foundational to the development of modern organic chemistry and the concept of aromatic compounds. The term can also be used metaphorically to refer to a foundational or elegant solution in a complex problem.
Linguistics
Semantic Notes
The term is historically significant and inextricably linked to August Kekulé and the discovery of the benzene ring structure. It is a proper noun and typically capitalised. In modern chemistry, it is often taught as a historical concept, with the modern delocalised model of benzene being the more accurate representation.
Dialectal Variation
British vs American Usage
Differences
No significant difference in meaning or usage. Spelling of 'formula' remains the same. Pronunciation may follow regional patterns for the name 'Kekulé' and the word 'formula'.
Connotations
Identical connotations of historical significance and foundational chemical theory.
Frequency
Used with equal frequency in chemistry education in both regions.
Vocabulary
Collocations
Grammar
Valency Patterns
The lecturer explained [Kekulé's formula] to the class.[Kekulé's formula] represents the structure of benzene.He famously dreamt of [Kekulé's formula].Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “A Kekulé moment (a sudden, dream-like insight solving a complex problem).”
Usage
Context Usage
Business
Virtually never used.
Academic
Used in history of science and chemistry lectures to describe the 19th-century model of benzene.
Everyday
Not used in everyday conversation.
Technical
Core term in organic chemistry education and historical discussions of structural theory.
Examples
By Part of Speech
verb
British English
- The chemist Kekulé-formulated the structure after his famous reverie.
American English
- He attempted to Kekulé-formulate the compound's cyclic nature.
adverb
British English
- The molecule was conceived of Kekulé-style, as a ring.
American English
- He thought Kekulé-ly about the bonding problem.
Examples
By CEFR Level
- The diagram in the textbook shows Kekulé's formula for benzene.
- Kekulé's formula uses alternating single and double bonds.
- While Kekulé's formula was a groundbreaking proposal, it failed to explain benzene's lack of reactivity compared to typical alkenes.
- The historical narrative often cites Kekulé's formula as arising from a dream of a snake biting its own tail.
Learning
Memory Aids
Mnemonic
KEKULE Keeps Every Karl's Understanding of Linked Elements – the hexagon with alternating bonds.
Conceptual Metaphor
A FOUNDATION STONE (for aromatic chemistry); A DREAM SOLUTION (referencing the myth of Kekulé's dream).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Avoid literal translation like 'формула Кекуле'. The established term is 'формула Кекуле' or 'структура Кекуле'. The possessive 's is part of the name, not a separate word.
Common Mistakes
- Mispronouncing 'Kekulé' (should be KAY-ku-lay).
- Misspelling as 'Kekule's formula' (missing the accent).
- Using it as a term for all cyclic compounds instead of specifically benzene.
Practice
Quiz
What does Kekulé's formula primarily represent?
FAQ
Frequently Asked Questions
It is historically important but not fully accurate. Modern chemistry uses the delocalised electron cloud model to explain benzene's stability and properties.
August Kekulé was a German organic chemist who, in 1865, proposed the cyclic structure for benzene, which was a pivotal moment in chemistry.
Almost exclusively no. It is a proper noun specifically tied to the benzene ring. It may be used metaphorically for a seminal idea.
The standard English pronunciation is /ˈkeɪkʊleɪ/ (KAY-ku-lay), approximating the original German.