In chemistry, an oxonium ion is any cation containing an oxygen atom that has three bonds and 1+ formal charge. The simplest oxonium ion is the hydronium...
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Oxonium may refer to: Oxonium ion, any ion which contains a tricoordinated oxygen atom, RR'R"O+ Oxonium, an IUPAC name for the simplest oxonium ion, hydronium...
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bismuthine) moscovonium, McH+4 (protonated moscovine) oxonium, H3O+ (protonated water (IUPAC name oxidane). Oxonium is better known as hydronium, though hydronium...
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Hydronium (category Oxonium compounds)
British English) is the cation [H3O]+, also written as H3O+, the type of oxonium ion produced by protonation of water. It is often viewed as the positive...
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Hexafluorotitanic acid (redirect from Oxonium hexafluoridotitanate)
Hexafluorotitanic acid (systematically named oxonium hexafluoridotitanate(2-)) is an inorganic compound with the chemical formula (H3O)(H5O2)[TiF6]. According...
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Fluoroboric acid (redirect from Oxonium tetrafluoroboranuide)
Mootz, D.; Steffen, M. "Crystal structures of acid hydrates and oxonium salts. XX. Oxonium tetrafluoroborates H3OBF4, [H5O2]BF4, and [H(CH3OH)2]BF4", Zeitschrift...
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innovative example provided by Bucher et al. provides a way to utilize a fluoro oxonium ion and the trichloroacetimidate to encourage B stereoselectivity through...
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Pyrylium (category Oxonium compounds)
trivalent. Pyrilium is a mono-cyclic and heterocyclic compound, one of the oxonium ions. Pyrylium salts are easily produced from simple starting materials...
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from a metal to form an alkoxide anion, R–O−, with three lone pairs. In oxonium ions, one of oxygen's two lone pairs is used to form a third covalent bond...
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hydroxy groups of the activated complex gives a new oxonium ion. Loss of water from this oxonium ion and subsequent deprotonation gives the ester. A generic...
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aglycones of anthocyanins. They are based on the flavylium cation, an oxonium ion, with various groups substituted for its hydrogen atoms. They generally...
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solution involved three acetic acid molecules and one proton (present as an oxonium ion). In the transition state leading to the iminium ion (σ-complex), the...
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substituted derivatives) Oxonium ([R3O]+, where R is typically hydrogen or organyl) Hydronium ([H3O]+, the simplest oxonium ion) Quaternary ammonium cation...
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temperature. Two solid hydrates are known: the monohydrate HNO3·H2O or oxonium nitrate [H3O]+[NO3]− and the trihydrate HNO3·3H2O. An older density scale...
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acid 1 attacks thionyl chloride, and chloride ion leaves. The resulting oxonium ion 2 is activated towards nucleophilic attack and has a good leaving group...
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hydrofluorosilicic acid, silicofluoride, silicofluoric acid, oxonium hexafluorosilanediuide, oxonium hexafluoridosilicate(2−) Identifiers CAS Number 16961-83-4 Y...
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carbonyl reactant (2) is protonated by a protic acid and for the resulting oxonium ion 3 two resonance structures can be drawn. This electrophile engages...
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being organized into clusters that form species closer to [H9O4]+. Other oxonium ions are found when water is in acidic solution with other solvents. Although...
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(15 November 1996). "Reinvestigation of Crystalline Sulfuric Acid and Oxonium Hydrogensulfate". Acta Crystallographica Section C Crystal Structure Communications...
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liberated proton combines with a water molecule to give a hydronium (or oxonium) ion H3O+ (naked protons do not exist in solution), and so Arrhenius later...
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rearrangement step is believed to be the relative stability of the resultant oxonium ion. Although the initial carbocation is already tertiary, the oxygen can...
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of "oxonium", which is also still accepted, as it remains in the IUPAC Gold book, but rather reveals preference for the term "Hydronium".) "oxonium ylides"...
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oxonium and acylium ions are carbocationic synthons for carbonyl compounds such as ketones, aldehydes and carboxylic acid derivatives. An oxonium-type...
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also been used to isolate salts of oxonium ions. For example, from a solution of tetrachloroauric acid, the oxonium ion [H7O3]+ has been isolated as the...
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Triethyloxonium tetrafluoroborate (category Oxonium compounds)
Triethyloxonium tetrafluoroborate is the organic oxonium compound with the formula [(CH3CH2)3O]+[BF4]−. It is often called Meerwein's reagent or Meerwein's...
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a dibromoboryl oxonium cation and Br–. Rupture of the ether linkage occurs through the subsequent nucleophilic attack on the oxonium species by Br– to...
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has three bonds and carries a positive charge (i.e., the molecule is an oxonium). Another water molecule comes along and takes up the extra proton. This...
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adding the suffix "-onium" to the element's root: H4N+ is ammonium, H3O+ is oxonium, and H2F+ is fluoronium. Ammonium was adopted instead of nitronium, which...
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Friedhelm (1996). "Superacid Anions: Crystal and Molecular Structures of Oxonium Undecafluorodiantimonate(V), [H3O][Sb2F11], Cesium Fluorosulfate, CsSO3F...
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mechanisms. The propagation centre is a tertiary oxonium ion, mainly initialized by Lewis acids, trialkyl oxonium salts, carbocationic salts and others. Strong...
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