cyano group
Low (Technical/Scientific)Technical/Scientific
Definition
Meaning
The functional group -C≡N, consisting of a carbon atom triple-bonded to a nitrogen atom, found in many chemical compounds, especially cyanides and nitriles.
In broader chemical and biochemical contexts, it can refer to the presence of this specific atomic arrangement, which is highly reactive and often involved in binding to metals or in metabolic inhibition, as seen in compounds like hydrogen cyanide.
Linguistics
Semantic Notes
The term is inherently technical and specific to chemistry and related fields. It describes a precise structural component of a molecule, not a standalone object. It is almost exclusively used in noun-noun compounds (e.g., 'cyano group derivative').
Dialectal Variation
British vs American Usage
Differences
No significant lexical or spelling differences. Both varieties use the term identically in technical contexts.
Connotations
None beyond its scientific meaning.
Frequency
Equally low frequency in both varieties, confined to scientific discourse.
Vocabulary
Collocations
Grammar
Valency Patterns
The compound [VERB] a cyano group.A cyano group is [VERB] to the ring.The [NOUN] features a cyano group.Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Usage
Context Usage
Business
Virtually never used. May appear in highly specialised chemical industry reports.
Academic
Exclusively used in chemistry, biochemistry, pharmacology, and materials science papers and textbooks.
Everyday
Never used.
Technical
The primary domain of use. Found in chemical synthesis descriptions, spectroscopic analysis, patents, and safety data sheets for cyanide compounds.
Examples
By Part of Speech
adjective
British English
- The cyano-substituted benzene was analysed.
- They studied the cyano derivative.
American English
- They characterized the cyano-containing polymer.
- The cyano-modified surface showed increased reactivity.
Examples
By CEFR Level
- The presence of a cyano group can make a compound highly toxic.
- Acetonitrile is a simple solvent containing a cyano group.
- The researchers succeeded in selectively substituting the bromide for a cyano group.
- Infrared spectroscopy can easily detect the characteristic sharp stretch of the cyano group around 2200 cm⁻¹.
- The cyano group's strong electron-withdrawing effect influences the aromatic ring's reactivity.
Learning
Memory Aids
Mnemonic
Think CYAN- (as in cyanide, a famous poison) and -O (from 'oxygen', but here it's part of the 'cyano' name). The 'group' is a cluster of atoms: Carbon (C) and Nitrogen (N) bound by a powerful triple bond.
Conceptual Metaphor
The cyano group is often conceptualised as a 'molecular handle' or a 'reactive site' that can be attached, removed, or modified to change a compound's properties.
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'cyan' (голубой/сине-зелёный colour). 'Cyano' is strictly chemical. "Цианогруппа" is the correct direct translation.
- The word 'group' here means 'функциональная группа', not 'коллектив'.
Common Mistakes
- Misspelling as 'cyano-group' with a hyphen (standard is without).
- Confusing it with 'cyanate group' (-OCN), which has a different structure and properties.
- Pronouncing 'cyano' as /ˈsaɪnoʊ/ (two syllables) instead of the standard three-syllable /ˈsaɪ.ə.noʊ/.
Practice
Quiz
What is the chemical structure of a cyano group?
FAQ
Frequently Asked Questions
Not exactly. 'Cyanide' typically refers to salts containing the cyanide ion (CN⁻) or hydrogen cyanide (HCN). A 'cyano group' is the functional group (-C≡N) when it is part of a larger molecule, like in a nitrile (e.g., CH₃CN, acetonitrile).
It depends on the specific compound. Some, like acetonitrile, are common lab solvents with relatively low acute toxicity. Others, like hydrogen cyanide, are extremely poisonous. The potential to release cyanide ion (CN⁻) in the body is the key danger. Always consult safety data sheets.
They are ubiquitous in synthetic chemistry. Nitriles (organic compounds with a cyano group) are used as solvents (e.g., acetonitrile), in the production of plastics like acrylics, and as intermediates in pharmaceutical synthesis.
Look for the '-CN' notation in a structural formula or molecular formula. In names, the suffix '-nitrile' or the prefix 'cyano-' indicates its presence (e.g., benzonitrile, cyanoacetic acid).