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Quantum state of a particle and its antiparticle
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
Onium
Class of positively-charged molecules
simple onium ion has a charge of +1. A larger ion that has two onium ion subgroups is called a double onium ion, and has a charge of +2. A triple onium ion
Onium_ion
Resin that cures when exposed to light of appropriate wavelengths
industrial applications. Other less common onium salts include ammonium and phosphonium salts. A typical onium compound used as a photoinitiator contains
Photopolymer
Atoms composed of exotic particles
quantum chromodynamics. An onium (plural: onia) is the bound state of a particle and its antiparticle. The classic onium is positronium, which consists
Exotic_atom
Type of paralyzing anesthetic including lepto- and pachycurares
the appropriate length and with two methonium, heads have small trimethyl onium heads and flexible links. They all exhibit a depolarizing block. Aminosteroids
Neuromuscular-blocking_drug
Neutral chemical compound with both a positively- and negatively-charged functional group
hydrogen atom, such as a quaternary ammonium or phosphonium cation (generally: onium ions), and with a negatively charged functional group, such as a carboxylate
Betaine
Bound state of an electron and positron
anti-particle, a positron, bound together into an exotic atom, specifically an onium. Unlike hydrogen, the system has no protons. The system is unstable: the
Positronium
Extremely bitter chemical compound
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
Denatonium
Meson whose constituents are a quark and its own antiquark of the same flavor
In particle physics, quarkonium (from quark and -onium, pl. quarkonia) is a flavorless meson whose constituents are a heavy quark and its own antiquark
Quarkonium
Organic compounds made of alkyl/aryl groups bound to oxygen (R–O–R')
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
Ether
Ion containing two or more atoms
non-tautomeric zwitterions are called betaines. Monatomic ion Protonation Onium ion Petrucci, Ralph H.; Herring, F. Geoffrey; Madura, Jeffry D.; Bissonnette
Polyatomic_ion
Polyatomic ion
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
Nitronium_ion
Salt formed by a Lewis acid-base reaction where the acid atom loses formal charge
14–18 in their higher oxidation states. Ate complexes are a counterpart to onium ions. Lewis acids form ate ions when the central atom reacts with a donor
Ate_complex
Chemical element with atomic number 36 (Kr)
by randomly oriented hydrogen molecules. The kryptonium ion, KrH+, is an onium ion, consisting of protonated krypton. Kryptonium is known in dilute gas
Krypton
Any onium ion containing a halogen atom carrying a positive charge
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
Halonium_ion
British musician and producer (born 1960)
Black, BUS/Gus Till, Vlastur, Deep Fried Dub, The Egg, Jef Stott/Aslan Dub, Onium, Living Light, Sadhu Sensi, DM-Theory and Uncle Fester On Acid. In 2018
Youth_(musician)
Chemical compound made of four elements
compound Onium ion Quaternary phase IUPAC, Compendium of Chemical Terminology, 5th ed. (the "Gold Book") (2025). Online version: (2006–) "Onium compounds"
Quaternary_compound
Chemical compound
exist as a pure metal but does as an amalgam (NH4 alloy with mercury). Onium compounds Quaternary ammonium cation ([NR4]+, where R is organyl) Tetrafluoroammonium
Ammonium
Bound state of a proton and antiprotron
corresponding antiparticle, it is an example of a type of exotic atom called an onium. Protonium has a mean lifetime of approximately 1.0 μs and a binding energy
Protonium
System for naming organic chemical compounds
hydride of a halogen, chalcogen or pnictogen are named by adding the suffix "-onium" to the element's root: H4N+ is ammonium, H3O+ is oxonium, and H2F+ is fluoronium
IUPAC nomenclature of organic chemistry
IUPAC_nomenclature_of_organic_chemistry
Chemical warfare agent
Lewis base, have a common name of mustard. Such compounds can form cyclic "onium" ions (sulfonium, ammonium, etc.) that are good alkylating agents. These
Mustard_gas
Elementary subatomic particle with negative electric charge
predicted to form exotic atoms like other charged subatomic particles. The onium state consists of a tau and an anti-tau: τ+ τ− , called tauonium or ditauonium
Tau_(particle)
Chemical compound
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
Indolium
Season of television series
featurettes—Dying to Know: Bones Answers Your Questions! and Bare Bones: Total Fandom-onium. "FOX Announces Fall Premiere Dates for the 2012-2013 Season" (Press release)
Bones_season_8
Cation containing an oxygen atom with 3 bonds and 1+ formal charge
and acetate. 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)
Oxonium_ion
Chemical compound
"Onium ylide chemistry. 1. Bifunctional acid-base-catalyzed conversion of heterosubstituted methanes into ethylene and derived hydrocarbons. The onium
Zinc_chloride
Ion of carbon with five hydrogens
molecule), bearing a +1 electric charge. It is a superacid and one of the onium ions, indeed the simplest carbonium ion. It is highly unstable and highly
Methanium
Light-sensitive material used in making electronics
et al. (2000). Houlihan, Francis M. (ed.). "Radiation and photochemistry of onium salt acid generators in chemically amplified resists". Proc. SPIE. Advances
Photoresist
List of particles in matter including fermions and bosons
include pionium (π− π+ ) and quarkonium atoms. Leptonic atoms, named using -onium, are exotic atoms constituted by the bound state of a lepton and an antilepton
List_of_particles
Muscle relaxant
in 1964. The name was derived from p(iperidino)an(drostane)cur(arising)-onium. A paper published in 1973 discussed the structure-activity relationships
Vecuronium_bromide
Organic compound
an elimination reaction. 1,3-dipole Betaine: a neutral molecule with an onium cation and a negative charge Zwitterion: a neutral molecule with one or
Ylide
Chemical compound
alkylating agent and a quaternary ammonium salt. Chlormequat is one of the onium-type growth regulators. Chlormequat was discovered in the 1950s, and was
Chlormequat
Type of atom
in this case "muium". Replacing "-on" with (or otherwise appending) "-onium" is mostly used for bound states of a particle with its own antiparticle
Muonium
BASIS FOR THE PHYSIOLOGICAL ACTIVITY OF CERTAIN -ONIUM COMPOUNDS. V. THE MOBILITIES . OF THE -ONIUM IONS. II." Journal of the American Chemical Society
Isaac_Bencowitz
Transfer of a proton between identical molecules
autoionization, contribute to the molar conductivity of protolytic solvents. Onium ion, a protonated molecule more generally Ion transport number Ionic atmosphere
Hydrogen transfer in protic solvents
Hydrogen_transfer_in_protic_solvents
Chemical compound
"Onium Ylide chemistry. 1. Bifunctional acid-base-catalyzed conversion of heterosubstituted methanes into ethylene and derived hydrocarbons. The onium
Hexamethylbenzene
Aqueous cation H3O+
22 October 2019. Retrieved 9 November 2021. "Table 17 Mononuclear parent onium ions". IUPAC. Tang, Jian; Oka, Takeshi (1999). "Infrared spectroscopy of
Hydronium
Chemical compound
Gertrude (1995). Compounds with Si, P, As, Sb, Bi, the Alkali Metals and Onium Cations. Springer Berlin Heidelberg. ISBN 978-3-540-93719-7. Retrieved 29
Ammonium_dicyanoaurate
Chemical compounds containing at least one xenon atom
halogens bromine, chlorine, and fluorine. The xenonium ion, XeH+, is an onium ion, consisting of protonated xenon. Although the existence of xenonium
Xenon_compounds
Topics referred to by the same term
up onia in Wiktionary, the free dictionary. Onia may refer to: Plural of onium, a bound state of a particle and its antiparticle Onia, Arkansas, an unincorporated
Onia
Chemical compound
Fernando; Bofill, Josep M.; El-Faham, Ayman; Kates, Steven A. (1998). "Use of Onium Salt-Based Coupling Reagents in Peptide Synthesis1". The Journal of Organic
PyAOP_reagent
Ion with a positively charged carbon atom
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
Carbocation
Any cation that has a pentavalent carbon atom
ions called non-classical ions are found in certain norbornyl systems. Onium compounds Carbenium ion Scholz, F.; Himmel, D.; Heinemann, F. W.; Schleyer
Carbonium_ion
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
Organobismuth_chemistry
man': bǐnánwēng Combination of transliteration for 'pyran' and suffix for 'onium'. 苄 benzyl 卞 biàn 'hurried' biàn European pronunciation 卟吩 porphin 卜 bǔ
Organic nomenclature in Chinese
Organic_nomenclature_in_Chinese
Ion
characteristics of molten salts derived from trimethylsulfonium bromide". Canadian Journal of Chemistry. 73 (4): 593–598. doi:10.1139/v95-076. Onium compounds
Trimethylsulfonium
Chemical compound
G.; Goldberg, Y. S.; Shymanska, M. V.; Lukevics, E. (1987). "Quaternary Onium Hexachloroplatinates: Novel Hydrosilylation Catalysts". Organometallics
Potassium_hexachloroplatinate
Chemical reaction in organic chemistry
sulfonium ylide. Consequently reagent preparation is less demanding: the onium salt can be deprotonated with weaker bases, and the ylide lasts longer in
Johnson–Corey–Chaykovsky reaction
Johnson–Corey–Chaykovsky_reaction
Predicted exotic atom
P. Druzhinin [ru], researchers at the INP SB RAS. Muonium Positronium Onium Brodsky, Stanley J.; Lebed, Richard F. (2009). "Production of the smallest
True_muonium
1944 ballet by Martha Graham and Aaron Copland
Spring has been performed by numerous dance companies since, including the Onium Ballet Project in Hawaii, the Nashville Ballet in Tennessee, Dance Kaleidoscope
Appalachian_Spring
Group of chemical compounds
chloride was investigated again in 1946 and methylammonium bromide in 1961. Onium compound Methylammonium lead halide Methylammonium nitrate Li, Hangqian
Methylammonium_halide
1209200808091419.a01.pub2 J. V. Crivello The Discovery and Development of Onium Salt Cationic Photoinitiators, J. Polym. Sci., Part A: Polym. Chem., 1999
Photoacid
Topics referred to by the same term
commercial name for pantoprazole, a proton pump inhibitor drug Protonium, an onium, a proton-antiproton pair All pages with titles beginning with Protium All
Protium_(disambiguation)
Treatise by Aristotle
eosdem libros annotationibus quàm castigatissimae leguntur duo demum horum onium extant indices: alter questionum ac conclusionum singulorum librorum nuper
Physics_(Aristotle)
Family of polyatomic cations containing phosphorus
AlCl3 → [RPCl3]+AlCl− 4 Ammonium (NH+ 4) Arsonium (AsH+ 4) Hydronium (H3O+) Onium compounds Organophosphorus chemistry Corbridge, D. E. C. (1995). Phosphorus:
Phosphonium
Chemical compound
bis-onium ester of α-chlorofumaric acid: this particular feature arises solely from the (1R)-trans benzyltetrahydroisoquinolinium moiety at one onium head
Gantacurium_chloride
Production of peptides
ISSN 0936-5214. Albericio F, Bofill JM, El-Faham A, Kates SA (1998). "Use of Onium Salt-Based Coupling Reagents in Peptide Synthesis". J. Org. Chem. 63 (26):
Peptide_synthesis
Composite particle of two mesons
will provide crucial tests of low-energy QCD predictions. Mesonic molecule Onium Adeva, B.; et al. (2011). "Determination of ππ scattering lengths from measurement
Pionium
Russian organic and medicinal chemist. (1935–2017)
presence of lithium perchlorate. The proposed reaction pathway includes onium ion formation with the following perchlorate ion addition. The “doping effect”
Nikolay_Zefirov
Any organic compound containing a C=C=C group
Reactions with soft electrophiles (e.g. Br+) deliver positively charged onium ions 13. Transition-metal-catalysed reactions proceed via allylic intermediates
Allene
Cation of the form [SR3]+
liquid bromine to give bromosulfonium bromides, i.e.: RSR′ + [RR′S+Br]Br− Onium compounds Knop, Osvald; Cameron, T. Stanley; Bakshi, Pradip K.; Linden,
Sulfonium
Japanese chemist (1927–2018)
as the halogen. In the years since its discovery, a number of different onium salts of aza-arenes have been used to catalyze a number of different dehydration
Teruaki_Mukaiyama
Chain polymerization involving cyclic monomers
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
Ring-opening_polymerization
Ukrainian Chemist
original on 2017-08-10. Retrieved 2017-08-10. Komarov, Igor. "Study of onium salts by NMR in the presence of lanthanide shift reagents". Archived from
Igor_V._Komarov
Drug used in a hospital setting
tetrahydroisoquinolinium rings, as well as both the positively charged nitrogen (onium) heads, and the E/Z diastereomerism at the C=C double bond of the oct-4-ene
Mivacurium_chloride
Industrial processes using an electric field
than it was when was charged, and precipitation onto the cathode occurs. Onium salts, which have been used in the cathodic process, are not protonated
Electrophoretic_deposition
American artist (born 1951)
Karlsruhe lecture page Joseph Nechvatal: Immersion Into Noise "bOdy pandemOnium. Immersion into Noise". art-in-berlin.de (in German). Retrieved 2021-04-03
Joseph_Nechvatal
Uruguayan-born American composer
Orchestra. (Albuquerque, NM) CLOCKS – Choreography by Minou Lallemand for Onium Ballet Project and Chamber Music Hawaii. (Honolulu, Hawaii) CAPADOCIA (Third
Miguel_del_Águila
also has a habit of hugging Mahiro, claiming she's replenishing her "son-onium". Takehiko Yoichi (余市 健彦, Yoichi Takehiko) Voiced by: Wataru Hatano Class
List of Nyaruko: Crawling with Love characters
List_of_Nyaruko:_Crawling_with_Love_characters
resonance Nucleic Acid Nucleophile Octane Odd Hassel Oganesson Ohm Olivine Onium ion Opal Optical isomerism Organic chemistry Organic compound Organic nomenclature
Index_of_chemistry_articles
sodium fluoride or lithium fluoride) are often used, but also the use of onium halides is possible. Transhalogenation has been described as a gentle method
Transhalogenation
Soviet chemist and academician
(1945). "Decomposition and formation of onium salts and synthesis of organoelement compounds through onium compounds: 1. Two types of decomposition of
Alexander_Nesmeyanov
triphenylstibine and biphenyl. Like the organobismuth compounds, stiboranes form onium compounds and ate complexes. Unsymmetrical stiboranes can also be obtained
Organoantimony_chemistry
Chemical compound
but is insoluble in diethyl ether, benzene and tetrachloromethane. The onium salt reacts practically quantitatively with an ethanolate anion from sodium
2,2-Diethoxytetrahydrofuran
Chemical compound
Olah, George A.; Donovan, Daniel J.; Shen, Jacob; Klopman, Gilles (1975). "Onium ions. XVI. Hydrogen-deuterium exchange accompanying the cleavage of ammonium
Nitrogen_pentahydride
The following is a partial list of the "D" codes for Medical Subject Headings (MeSH), as defined by the United States National Library of Medicine (NLM)
List_of_MeSH_codes_(D02)
German chemist
(2022-01-21). "Asymmetric Hydroboration of Ketones by Cooperative Lewis Acid–Onium Salt Catalysis: A Quantum Chemical and Microkinetic Study to Combine Theory
René_Peters_(chemist)
Theoretical particle physicist
G.P. (1996). "Large multiplicity fluctuations and saturation effects in onium collisions". Nuclear Physics B. 475 (1–2): 293–317. arXiv:hep-ph/9605302
Gavin_Salam
heat One-electron universe One-loop Feynman diagram One-way speed of light Onium Online refuelling Onsager reciprocal relations Onset of deconfinement Oops-Leon
Index_of_physics_articles_(O)
French chemist, academic and author
disclosed a method using a binary system associating triethyl borane with onium salts for efficient synthesis of polycarbonate polyols from CO2 and epoxides
Yves_Gnanou
Russian chemist
continuation of his studies on diazonium salt chemistry led him into the field of onium compounds, particularly iodonium compounds. New methods for synthesizing
Oleg_Reutov
ONIUM
ONIUM
ONIUM
ONIUM
Boy/Male
Afghan, Arabic, German, Muslim, Sindhi
Patient
Girl/Female
Hindu, Indian, Kannada, Malayalam, Tamil, Telugu, Traditional
Hindu Goddess Name; Goddess Parvati; Wife of God Siva
Boy/Male
Muslim
Insight, Wisdom
Girl/Female
Hindu, Indian
Child Language
Boy/Male
Arabic
Time; Era; Epoch
Girl/Female
Christian & English(British/American/Australian)
Source of Joy
Girl/Female
Arabic, Muslim, Pakistani
Angel
Biblical
consolation; repentance
Girl/Female
American, Australian, British, Christian, Czechoslovakian, Danish, English, French, German, Hebrew, Romanian
God's Able-bodied One; Diminutive of Gabrielle; Woman of God; God is My Strength
Boy/Male
Hindu, Indian
Name of a Sage
ONIUM
ONIUM
ONIUM
ONIUM
ONIUM