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...

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...

bismuthine) moscovonium, McH+4 (protonated moscovine) oxonium, H3O+ (protonated water (IUPAC name oxidane). Oxonium is better known as hydronium, though hydronium...

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...

Mootz, D.; Steffen, M. "Crystal structures of acid hydrates and oxonium salts. XX. Oxonium tetrafluoroborates H3OBF4, [H5O2]BF4, and [H(CH3OH)2]BF4", Zeitschrift...

innovative example provided by Bucher et al. provides a way to utilize a fluoro oxonium ion and the trichloroacetimidate to encourage B stereoselectivity through...

Hexafluorotitanic acid (systematically named oxonium hexafluoridotitanate(2-)) is an inorganic compound with the chemical formula (H3O)(H5O2)[TiF6]. According...

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...

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...

substituted derivatives) Oxonium ([R3O]+, where R is typically hydrogen or organyl) Hydronium ([H3O]+, the simplest oxonium ion) Quaternary ammonium cation...

aglycones of anthocyanins. They are based on the flavylium cation, an oxonium ion, with various groups substituted for its hydrogen atoms. They generally...

temperature. Two solid hydrates are known: the monohydrate HNO3·H2O or oxonium nitrate [H3O]+[NO3]− and the trihydrate HNO3·3H2O. An older density scale...

cross-couplings. Like other oxonium ions, pyrylium is unstable in neutral water. However, pyrylium is much less reactive than ordinary oxonium ions because of aromatic...

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...

hydrofluorosilicic acid, silicofluoride, silicofluoric acid, oxonium hexafluorosilanediuide, oxonium hexafluoridosilicate(2−) Identifiers CAS Number 16961-83-4 Y...

oxonium and acylium ions are carbocationic synthons for carbonyl compounds such as ketones, aldehydes and carboxylic acid derivatives. An oxonium-type...

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"...

rearrangement step is believed to be the relative stability of the resultant oxonium ion. Although the initial carbocation is already tertiary, the oxygen can...

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...

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...

complete the reaction. When the solvent is water, the intermediate is an oxonium ion. This reaction step is fast. Deprotonation: Removal of a proton on...

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...

a dibromoboryl oxonium cation and Br–. Rupture of the ether linkage occurs through the subsequent nucleophilic attack on the oxonium species by Br– to...

Triethyloxonium tetrafluoroborate is the organic oxonium compound with the formula [(CH3CH2)3O]+[BF4]−. It is often called Meerwein's reagent or Meerwein's...

(15 November 1996). "Reinvestigation of Crystalline Sulfuric Acid and Oxonium Hydrogensulfate". Acta Crystallographica Section C Crystal Structure Communications...

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...

word for its county town Shrewsbury; "Oxon" for Oxfordshire, from Latin Oxonium (referring to both the county and the city of Oxford); "Hants" for Hampshire;...

Friedhelm (1996). "Superacid Anions: Crystal and Molecular Structures of Oxonium Undecafluorodiantimonate(V), [H3O][Sb2F11], Cesium Fluorosulfate, CsSO3F...

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...

antiviral drug oseltamivir; this drug mimics the planar nature of the ring oxonium ion in the reaction of the viral enzyme neuraminidase. However, not all...