Crown ether

Rarity: Uncommon

A topic a little better known than average, read and translated beyond its own country.

Rarity follows how well known the article is: its views on the French and English Wikipedia over a year, and the number of languages it exists in.

At a glance

Class

Notion

Domain

Science and technology

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1 player has it in their collection.

What Wikipedia says

In organic chemistry, crown ethers are cyclic chemical compounds that consist of a ring containing several ether groups (R−O−R'). The most common crown ethers are cyclic oligomers of ethylene oxide, the repeating unit being ethyleneoxy, i.e., −CH2CH2O−.

Excerpt from the Wikipedia article “Crown ether”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: User:Benjah-bmm27, Public domain, via Wikimedia Commons.