- Hydrogen ion
Hydrogen ion is recommended by
IUPACas a general term for all ions of hydrogenand its isotopes. ["Compendium of Chemical Terminology", 2nd edition McNaught, A.D. and Wilkinson, A. Blackwell Science, 1997 [ISBN 0-86542-684-8] , also [http://www.iupac.org/publications/compendium/index.html online] ] Depending on the chargeof the ion, two different classes can be distinguished:
Cation (positively charged)
When hydrogen loses its
electron, the following cations can be formed:
* Hydron: general name referring to the positive ion of any hydrogen isotope (H+)
Deuteron: 2H+, D+
* Triton: 3H+, T+In addition, the ions produced by the reaction of these cations with
wateras well as their hydratesare called hydrogen ions:
* Zundel cation: H5O2+
* Eigen cation: H9O4+
The latter two play an important role in proton hopping according to the
In connection with acids, hydrogen ions typically refer to hydrons.
Anion (negatively charged)
anions are formed when additional electrons are acquired:
Hydride: general name referring to the negative ion of any hydrogen isotope
* Deuteride: 2H-, D-
* Tritide: 3H-, T-
organic chemistry, a hydrogen atom in a molecule is often referred to simply as a proton. The hydrogen anionhas played an important role in quantum physics.
Wikimedia Foundation. 2010.