An onium (plural: onia) is a bound state of a particle and its antiparticle. These states are usually named by adding the suffix -onium to the name of...

and so on. Compounds of an onium cation and some other anion are known as onium compounds or onium salts. Onium ions and onium compounds are inversely analogous...

industrial applications. Other less common onium salts include ammonium and phosphonium salts. A typical onium compound used as a photoinitiator contains...

quantum chromodynamics. An onium (plural: onia) is the bound state of a particle and its antiparticle. The classic onium is positronium, which consists...

the appropriate length and with two methonium, heads have small trimethyl onium heads and flexible links. They all exhibit a depolarizing block. Aminosteroids...

afford methyl halides: ROCH3 + HBr → CH3Br + ROH These reactions proceed via onium intermediates, i.e. [RO(H)CH3]+Br−. Some ethers undergo rapid cleavage with...

hydrogen atom, such as a quaternary ammonium or phosphonium cation (generally: onium ions), and with a negatively charged functional group, such as a carboxylate...

structure on the right) with the strong Coulombic attraction between the "onium" atom and the adjacent carbon accounting for the reduced bond length. Consequently...

compound Onium ion Quaternary phase IUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold Book") (1997). Online corrected version: (2006–) "Onium compounds"...

primary use as a denaturant and its chemical nature as a cation, hence -onium as a Neo-Latin suffix. Denatonium is a quaternary ammonium cation. It is...