15-Crown-5

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Notion

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Science and technology

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What Wikipedia says

15-Crown-5 is a crown ether with the formula (C2H4O)5. It is a cyclic pentamer of ethylene oxide. It forms a complex with various cations, including sodium (Na+) and potassium (K+); with a preference for the former.

Excerpt from the Wikipedia article “15-Crown-5”, under the CC BY-SA 4.0 license. Read the article on Wikipedia

Image: Jynto (talk), CC0, via Wikimedia Commons.