triple onium ion has a charge of +3, and so on. Compounds of an onium cation and some other anion are known as onium compounds or onium salts. Onium ions and...

A halonium ion is any onium ion containing a halogen atom carrying a positive charge. This cation has the general structure R−+X−R′ where X is any halogen...

The nitronium ion, [NO2]+, is a cation. It is an onium ion because its nitrogen atom has +1 charge, similar to ammonium ion [NH4]+. It is created by the...

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...

Acylium ion, a type of oxonium ion with the structure R–C≡O+ Onium ion, a +1 cation derived by protonation of a hydride (includes oxonium ions) Pyrylium...

composition is key point in mass-spectrometry. Monatomic ion Protonation Onium ion Petrucci, Ralph H.; Herring, F. Geoffrey; Madura, Jeffry D.; Bissonnette...

of protolytic solvents. Lyate ion, a deprotonated solvent molecule Onium ion, a protonated molecule more generally Ion transport number Ionic atmosphere...

Geological Survey. Retrieved 9 November 2021. "Table 17 Mononuclear parent onium ions". IUPAC. Tang, Jian; Oka, Takeshi (1999). "Infrared spectroscopy of H3O+:...

+1 electric charge. It is a superacid and one of the onium ions, indeed the simplest carbonium ion. It is highly unstable and highly reactive even upon...

C8H8N+, and forms chemical compounds in combination with anions. It is an onium ion derived from its parent compound, indole, by the addition of a proton...

molecules More carbonium ions called non-classical ions are found in certain norbornyl systems Onium compounds Carbenium ion Scholz, F.; Himmel, D.; Heinemann...

kryptonium ion, KrH+, is an onium ion, consisting of protonated krypton. Kryptonium is known in dilute gas phase. Although salts of the fluorokryptonium ion, KrF+...

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

counter ion. It is thought that the acidic proton generated is what ultimately initiates the polymerization. Since their discovery in the 1970s aryl onium salts...

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

resonance Nucleic Acid Nucleophile Octane Odd Hassel Oganesson Ohm Olivine Onium ion Opal Optical isomerism Organic chemistry Organic compound Organic nomenclature...

higher oxidation states. Ate complexes are a counterpart to onium ions. Lewis acids form ate ions when the central atom reacts with a donor (2 e− X-type ligand)...

not exist as a pure metal but does as an amalgam (alloy with mercury). Onium compounds Fluoronium, ([H2F]+ and substituted derivatives) Oxonium ([R3O]+...

Reactions with soft electrophiles (e.g. Br+) deliver positively charged onium ions 13. Transition-metal-catalysed reactions proceed via allylic intermediates...

purple Ph5Bi was the first to be synthesized so. Bi(V) easily forms an onium ion for example by protonation with p-toluenesulfonic acid: Ph5Bi + HO3SAr...

base, have a common name of mustard. Such compounds can form cyclic "onium" ions (sulfonium, ammonium, etc.) that are good alkylating agents. These compoudsn...

system. The monomers can be activated by Bronsted acids, carbenium ions, onium ions, and metal cations. CROP can be a living polymerization and can be...

The xenonium ion, XeH+, is an onium compound, consisting of protonated xenon. Although the existence of the xenonium salts has not been proven, the isolated...

electrophilic attack of H+ or R+ on an alkane, in analogy to other main group onium species, while a carbocation that contains any type of three-centered bonding...

In organic chemistry, a sulfonium ion, also known as sulphonium ion or sulfanium ion, is a positively-charged ion (a "cation") featuring three organic...

perchlorate. The proposed reaction pathway includes onium ion formation with the following perchlorate ion addition. The “doping effect” can also be observed...

In particle physics, quarkonium (from quark and -onium, pl. quarkonia) is a flavorless meson whose constituents are a heavy quark and its own antiquark...

THE PHYSIOLOGICAL ACTIVITY OF CERTAIN -ONIUM COMPOUNDS. THE MOBILITIES OF THE -ONIUM IONS. I. SULFONIUM IONS." J. Am. Chem. Soc., 1925, 47 (7), pp 1904–1916...

George A.; Donovan, Daniel J.; Shen, Jacob; Klopman, Gilles (1975). "Onium ions. XVI. Hydrogen-deuterium exchange accompanying the cleavage of ammonium...

characteristics of molten salts derived from trimethylsulfonium bromide". Canadian Journal of Chemistry. 73 (4): 593–598. doi:10.1139/v95-076. Onium compounds...