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Selenoneine is a selenium containing ergothioneine derivative where the selenium (Se) atom replaces a sulfur atom. It can be systematically named as (2-selenyl-N α ,N α ,N α -trimethyl-L-histidine or 3-(2-hydroseleno-1H-imidazol-5-yl)-2-(trimethylammonio)propanoate).
Selenium was used as the photoabsorbing layer in the first solid-state solar cell, which was demonstrated by the English physicist William Grylls Adams and his student Richard Evans Day in 1876. [77] Only a few years later, Charles Fritts fabricated the first thin-film solar cell, also using selenium as the photoabsorber.
Here's what selenium is, what benefits it provides and the dangers of taking too much.
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Conceptually, polyselenides are derived by deprotonation polyselenanes H 2 Se n, but such species are rare or unstable.Instead, analogous to the preparation of many Zintl ions, polyselenides are produced by reduction of elemental Se with alkali metals.
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Selenols are sometimes also called selenomercaptans and selenothiols. Selenols are one of the principal classes of organoselenium compounds . [ 1 ] A well-known selenol is the amino acid selenocysteine .
The compound was first synthesized in 1884 by Auguste Verneuil by the reaction of hydrogen selenide and cyanamide: [2]. H 2 Se + N≡C−NH 2 → Se=C(NH 2) 2. While this reaction has even found use in industrial synthesis of selenourea, [3] more modern methods concern themselves with synthesis of substituted selenoureas.