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Zwitterion

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In chemistry a zwitterion (from the German “hybrid ion”), or inner salt, is a compound containing both a formal positive and a formal negative charge on different atoms. As the molecule contains two opposite charges, it is electrically neutral. Some common examples of zwitterions are amino acids such as glycine (at physiological pH, as the state of the ionizable groups is pH dependent), although many amino acids contain a third ionizable group. Most zwitterions are fairly soluble in water and thus poorly soluble in many organic solvents.

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Amino Acid

Glycine

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Correspondence to Henderson James (Jim) Cleaves II .

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© 2014 Springer-Verlag Berlin Heidelberg

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Cleaves, H.J.(. (2014). Zwitterion. In: Amils, R., et al. Encyclopedia of Astrobiology. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-27833-4_1708-4

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  • DOI: https://doi.org/10.1007/978-3-642-27833-4_1708-4

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  • Publisher Name: Springer, Berlin, Heidelberg

  • Online ISBN: 978-3-642-27833-4

  • eBook Packages: Springer Reference Physics and AstronomyReference Module Physical and Materials ScienceReference Module Chemistry, Materials and Physics

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Chapter history

  1. Latest

    Zwitterion
    Published:
    07 April 2023

    DOI: https://doi.org/10.1007/978-3-642-27833-4_1708-5

  2. Original

    Zwitterion
    Published:
    16 April 2015

    DOI: https://doi.org/10.1007/978-3-642-27833-4_1708-4