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zwitterion - translation to french
CLASS OF MOLECULAR CHEMICAL COMPOUNDS WITH LOCALIZED IONIC CHARGES
Zwitterionic; Internal salt; Double ion; Inner salt; Zwitteron; Zwiterion; Zwitterions; Dipolar zion; Dipolar ion
![An [[amino acid]] contains both acidic (carboxylic acid fragment) and basic (amine fragment) centres. The isomer on the right is a zwitterion.](https://commons.wikimedia.org/wiki/Special:FilePath/Amino Acid Zwitterion Structural Formulae V.1.svg?width=200 "An [[amino acid]] contains both acidic (carboxylic acid fragment) and basic (amine fragment) centres. The isomer on the right is a zwitterion.")
![[[Sulfamic acid]] isomers, with the zwitterion (right)](https://commons.wikimedia.org/wiki/Special:FilePath/Zwitterion Structural Formulae V.1.svg?width=200 "[[Sulfamic acid]] isomers, with the zwitterion (right)")
![[[Anthranilic acid]]](https://commons.wikimedia.org/wiki/Special:FilePath/Anthranilsäure.svg?width=200 "[[Anthranilic acid]]")
![H4EDTA]]](https://commons.wikimedia.org/wiki/Special:FilePath/EDTA-xtal-2D-skeletal.png?width=200 "H4EDTA]]")
![[[Psilocybin]]](https://commons.wikimedia.org/wiki/Special:FilePath/Psilocybn.svg?width=200 "[[Psilocybin]]")
![[[Trimethylglycine]] (trivial name betaine)](https://commons.wikimedia.org/wiki/Special:FilePath/Betaine Formula V.1.svg?width=200 "[[Trimethylglycine]] (trivial name betaine)")
![Example of a [[phosphatidylcholine]]](https://commons.wikimedia.org/wiki/Special:FilePath/1-Oleoyl-2-almitoyl-phosphatidylcholine Structural Formulae V.1.png?width=200 "Example of a [[phosphatidylcholine]]")
![[[cocamidopropyl betaine]]](https://commons.wikimedia.org/wiki/Special:FilePath/Cocamidopropyl betaine2.png?width=200 "[[cocamidopropyl betaine]]")
zwitterion
n. zwitterion (Chemistry), ion which has a negative and positive charge
Definition
zwitterion
['zw?t?r???n, 'tsv?-]
¦ noun Chemistry an ion having separate positively and negatively charged groups.
Derivatives
zwitterionic adjective
Origin
early 20th cent.: Ger. Zwitterion, from Zwitter 'a hybrid' + Ion 'ion'.
Wikipedia
Zwitterion
In chemistry, a zwitterion ( TSVIT-ə-rye-ən; from German Zwitter [ˈtsvɪtɐ] 'hermaphrodite'), also called an inner salt or dipolar ion, is a molecule that contains an equal number of positively- and negatively-charged functional groups. With amino acids, for example, in solution a chemical equilibrium will be established between the "parent" molecule and the zwitterion.
Betaines are zwitterions that cannot isomerize to an all-neutral form, such as when the positive charge is located on a quaternary ammonium group. Similarly, a molecule containing a phosphonium group and a carboxylate group cannot isomerize.
