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nickel carbonyl

Very Low (Specialised)
UK/ˌnɪk.əl ˈkɑː.bə.nɪl/US/ˌnɪk.əl ˈkɑːr.bə.nɪl/

Formal, Technical, Scientific

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Definition

Meaning

A toxic, volatile, and flammable organometallic compound with the formula Ni(CO)₄, existing as a colourless liquid at room temperature.

A key intermediate in the Mond process for purifying nickel; a substance of high toxicity and significant industrial importance in metallurgy and chemical synthesis.

Linguistics

Semantic Notes

Primarily used in chemistry, metallurgy, and industrial safety contexts. The term is a compound noun where 'nickel' denotes the metal and 'carbonyl' specifies the chemical group (CO) bonded to it.

Dialectal Variation

British vs American Usage

Differences

No significant lexical or spelling differences. Potential minor pronunciation differences (e.g., stress).

Connotations

Identical technical connotations of toxicity and industrial process chemistry.

Frequency

Equally rare and confined to specialised fields in both dialects.

Vocabulary

Collocations

strong
toxic nickel carbonylnickel carbonyl poisoningformation of nickel carbonylMond processvolatile nickel carbonyl
medium
exposure to nickel carbonylnickel carbonyl isdecomposes to nickel andhandling nickel carbonyl
weak
dangerous nickel carbonylliquid nickel carbonylcompound called nickel carbonyl

Grammar

Valency Patterns

Noun + Verb: Nickel carbonyl decomposes.Adjective + Noun: Volatile nickel carbonylPreposition + Noun: Exposure to nickel carbonylVerb + Noun: To produce nickel carbonyl

Vocabulary

Synonyms

Neutral

tetracarbonylnickel(0)Ni(CO)₄

Weak

the carbonylthe nickel compound

Usage

Context Usage

Business

Mentioned in contexts of industrial refining, chemical supply, or workplace safety compliance.

Academic

Central in papers on organometallic chemistry, industrial processes, and toxicology.

Everyday

Virtually never used. If mentioned, it is in warnings or news reports about industrial accidents.

Technical

Precise term for the specific compound in chemistry, metallurgy, and safety data sheets.

Examples

By Part of Speech

verb

British English

  • The process is designed to carbonylate the impure nickel.
  • The metal will not readily carbonylate under those conditions.

American English

  • The reactor carbonylates the nickel feed.
  • We need to carbonylate the nickel catalyst.

adjective

British English

  • The nickel-carbonyl complex is unstable.
  • Nickel-carbonyl chemistry is a specialised field.

American English

  • The nickel-carbonyl intermediate was isolated.
  • Nickel-carbonyl exposure limits are strict.

Examples

By CEFR Level

A2
  • Nickel carbonyl is a dangerous chemical.
B1
  • Workers must wear protective gear because nickel carbonyl is very toxic.
  • The factory produces nickel carbonyl for metal refining.
B2
  • Nickel carbonyl, a key component in the Mond process, decomposes at higher temperatures to yield pure nickel.
  • Due to its volatility and extreme toxicity, strict containment protocols are essential when handling nickel carbonyl.
C1
  • The carcinogenic and pneumonitic effects of acute nickel carbonyl inhalation necessitate engineering controls that far exceed standard vapour handling procedures.
  • In the catalyst cycle, the nickel centre undergoes oxidative addition before being converted back to a nickel carbonyl species.

Learning

Memory Aids

Mnemonic

Think of 'Nickel' the metal getting a 'Carbonyl' coat (CO groups) – a toxic, invisible cloak.

Conceptual Metaphor

A volatile messenger (carrying nickel atoms in a gaseous form).

Watch out

Common Pitfalls

Translation Traps (for Russian speakers)

  • Avoid literal translation like 'никелевый карбонил' without verifying it's the standard term (it is). Do not confuse with 'никель карбонат' (nickel carbonate), a different compound.
  • The word order is fixed: 'nickel carbonyl', not 'carbonyl nickel'.

Common Mistakes

  • Misspelling as 'nickle carbonyl'.
  • Confusing it with nickel carbonate or other nickel salts.
  • Incorrectly using it as a plural (it is a mass/compound noun).

Practice

Quiz

Fill in the gap
The Mond process for refining nickel relies on the formation and subsequent decomposition of .
Multiple Choice

What is the primary hazard associated with nickel carbonyl?

FAQ

Frequently Asked Questions

At room temperature, nickel carbonyl is a colourless liquid. It is highly volatile, meaning it evaporates easily into a toxic gas.

Its primary industrial use is in the Mond process for purifying nickel metal. It is also used in some chemical vapour deposition processes and as a catalyst in organic chemistry.

It is highly toxic if inhaled, absorbed through the skin, or ingested. Exposure can cause severe respiratory damage (chemical pneumonitis), neurological symptoms, and is a suspected human carcinogen.

No. Nickel carbonyl is an industrial intermediate and reagent. The public would not encounter it in consumer goods due to its extreme hazard.