metallocene: meaning, definition, pronunciation and examples
Very LowTechnical / Scientific
Quick answer
What does “metallocene” mean?
An organometallic compound with a central metal atom or ion bonded to two cyclopentadienyl rings in a parallel, sandwich-like structure.
Audio
Pronunciation
Definition
Meaning and Definition
An organometallic compound with a central metal atom or ion bonded to two cyclopentadienyl rings in a parallel, sandwich-like structure.
A class of chemical compounds, particularly important as catalysts in polymerisation processes, including the production of polyolefins like polyethylene and polypropylene.
Dialectal Variation
British vs American Usage
Differences
No significant differences in meaning, spelling, or usage. The technical register is identical.
Connotations
Exclusively scientific; carries no additional cultural or regional connotations.
Frequency
Extremely rare outside specialised chemistry literature in both regions.
Grammar
How to Use “metallocene” in a Sentence
[adjective] + metallocene[verb (e.g., synthesise, use)] + metallocene + [as/in] + [noun phrase]Vocabulary
Collocations
Examples
Examples of “metallocene” in a Sentence
adjective
British English
- The metallocene-catalysed reaction proceeded with high selectivity.
American English
- The metallocene-catalyzed process improved the polymer's properties.
Usage
Meaning in Context
Business
Used in the petrochemical and plastics manufacturing industries when discussing advanced catalyst technologies and production efficiency.
Academic
Core term in advanced inorganic, organometallic, and polymer chemistry research and publications.
Everyday
Virtually never used.
Technical
Precise term for a specific class of catalysts and model compounds in laboratory synthesis and industrial processes.
Vocabulary
Synonyms of “metallocene”
Strong
Neutral
Weak
Vocabulary
Antonyms of “metallocene”
Watch out
Common Mistakes When Using “metallocene”
- Misspelling as 'metalocene' (dropping an 'l').
- Mispronouncing with stress on the first syllable (e.g., /ˈmɛtələsiːn/). Correct stress is on the second syllable.
- Using it as a general term for any organometallic catalyst.
FAQ
Frequently Asked Questions
No. Only structures where a metal is symmetrically 'sandwiched' between two cyclopentadienyl anions (Cp, C5H5-) qualify as classic metallocenes.
Ferrocene, with an iron (Fe) centre, discovered in 1951, which established the entire class and won its discoverers the Nobel Prize.
They act as highly efficient, single-site catalysts for producing plastics like polyethylene and polypropylene, allowing precise control over polymer structure and properties.
Yes, some metallocene derivatives (e.g., of titanium) have been investigated for their anti-cancer properties, though this is a niche research area compared to their catalytic uses.
An organometallic compound with a central metal atom or ion bonded to two cyclopentadienyl rings in a parallel, sandwich-like structure.
Metallocene is usually technical / scientific in register.
Metallocene: in British English it is pronounced /mɪˈtælə(ʊ)ˌsiːn/, and in American English it is pronounced /məˈtæləˌsiːn/. Tap the audio buttons above to hear it.
Learning
Memory Aids
Mnemonic
Imagine a METALlic atom caught between two identical, flat, five-sided (penta) rings, like the meat in a sandwich. METAL + 'ocene' (from ferrocene, the first example) = METALLOCENE.
Conceptual Metaphor
A 'molecular sandwich' (central metal atom as the filling, cyclopentadienyl rings as the bread).
Practice
Quiz
What is the defining structural feature of a metallocene?