Ferroin

Rarity: Uncommon

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

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Notion

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Science and technology

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What Wikipedia says

Ferroin, also known as tris(o-phenanthroline)iron(II), is the chemical compound with the formula [Fe(o-phen)3], where o-phen is the abbreviation of ortho-phenanthroline for 1,10-phenanthroline, a bidentate ligand. The term "ferroin" is used loosely and includes salts of other anions such as chloride.

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

Image: Capaccio, CC BY-SA 3.0, via Wikimedia Commons.