Halonium ion - Wikipedia
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 and no restrictions on R, [1] this structure can be cyclic or an open chain molecular structure.
Halonium Ion - Chemistry LibreTexts
Feb 28, 2022 · A halonium ion is a species in which there is a halogen atom that posses an octet of electrons but bears a formal charge of +1. Halonium ions are intermediates in the reaction of alkenes with halogens.
Halonium ion - Wikiwand
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 and no restrictions on R, this structure can be cyclic or an open chain molecular structure.
Bromination of Alkenes - The Mechanism – Master Organic …
Mar 15, 2013 · The mechanism proceeds through a cyclic halonium ion which undergoes backside attack at carbon by a nucleophile to give the anti-addition product. When water or alcohols are used as solvent, halohydrins or haloethers can form.
Halonium ion - (Organic Chemistry) - Fiveable
A halonium ion is an intermediate species formed during the addition of a halogen (X2) to an alkene, characterized by a three-membered ring structure consisting of two carbon atoms and one halogen atom.
10.4: Reactions of Alkenes- Addition of Bromine and Chlorine to …
Dec 16, 2021 · The mechanism that accounts for the anti addition of halogen involves the electron pairs transferred in a way that is different to what we are familiar with, and the formation of the cyclic halonium ion intermediate.
Halonium Ion - an overview | ScienceDirect Topics
Cyclic halonium ions with ring size three, five and six are formed from open chain dihalides by reaction with strong Lewis acids such as SbF 5. Although numerous iodonium, bromonium and chloronium ions are known, no fluoronium ion has been directly observed.
Halonium ion - chemeurope.com
A halonium ion in organic chemistry is any onium compound (ion) containing a bridged halogen atom carrying a positive charge. This cation has the general structure R-X + -R where X is any halogen and R any organic residue and this structure …
Halogen Bonds of Halogen(I) Ions─Where Are We and Where to Go?
Dec 20, 2023 · Halonium ions are open-chain or cyclic onium ions of the form D 2 X +, where X is a halogen. Halonium ions bound to two carbons, [C–X–C] +, do not possess halogen-bond donor character and were comprehensively explored by Kimball, Olah, Wyndberg, Brown, Nugent, Kochi, Denmark, and others.
IUPAC - halonium ions (H02728)
Feb 24, 2014 · https://doi.org/10.1351/goldbook.H02728. Ions of the form R2X+, where X is any halogen (X = Br+ , bromonium ions; X = Cl+, chloronium ions; X = F+, fluoronium ions; X = I+, iodonium ions). They may be open-chain or cyclic.