dication
Sign in to saveAlso known as divalent cation, divalent positive ion, Cations, Divalent, 2+ ion
A dication is any cation, of general formula X2+, formed by the removal of two electrons from a neutral species.
Research
2,813 papers- Porphyrin-Stabilized Nitrenium Dication.Chemistry (Weinheim an der Bergstrasse, Germany) · 2019
- An aldehyde-stabilised alkoxyaluminium dication.Chemical communications (Cambridge, England) · 2025
- The 2,4,6,8-Tetramethylhomotropyliumdication.Journal of computational chemistry · 2025
- A Stable Aromatic Tetrasilacyclobutadiene Dication.Journal of the American Chemical Society · 2019
- Dianion and Dication of Tetracyclopentatetraphenylene as Decoupled Annulene-within-an-Annulene Models.Angewandte Chemie (International ed. in English) · 2022
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- Divalent metals
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A dication is any cation, of general formula X2+, formed by the removal of two electrons from a neutral species.
Diatomic dications corresponding to stable neutral species (e.g. formed by removal of two electrons from H2) often decay quickly into two singly charged particles (H+), due to the loss of electrons in bonding molecular orbitals. Energy levels of diatomic dications can be studied with good resolution by measuring the yield of pairs of zero-kinetic-energy electrons from double photoionization of a molecule as a function of the photoionizing wavelength (threshold photoelectrons coincidence spectroscopy – TPEsCO). The dication is kinetically stable.