Compounds with similar properties to polyatomic halogens
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Pseudohalogens are polyatomic analogues of halogens, whose chemistry, resembling that of the true halogens, allows them to substitute for halogens in several classes of chemical compounds.[1] Pseudohalogens occur in pseudohalogen molecules, inorganic molecules of the general forms Ps–Ps or Ps–X (where Ps is a pseudohalogen group), such as cyanogen; pseudohalide anions, such as cyanide ion; inorganic acids, such as hydrogen cyanide; as ligands in coordination complexes, such as ferricyanide; and as functional groups in organic molecules, such as the nitrile group. Well-known pseudohalogen functional groups include cyanide, cyanate, thiocyanate, and azide.
^IUPAC, Compendium of Chemical Terminology, 2nd ed. (the "Gold Book") (1997). Online corrected version: (2006–) "pseudohalogens". doi:10.1351/goldbook.P04930
compounds. Pseudohalogens occur in pseudohalogen molecules, inorganic molecules of the general forms Ps–Ps or Ps–X (where Ps is a pseudohalogen group), such...
toxic chemical compound with the formula CNCl. This linear, triatomic pseudohalogen is an easily condensed colorless gas. More commonly encountered in the...
methionine), and synthesize other compounds. The compound is classified as a pseudohalogen. The carbon atom in cyanogen bromide is bonded to bromine by a single...
colorless and highly toxic gas with a pungent odor. The molecule is a pseudohalogen. Cyanogen molecules consist of two CN groups – analogous to diatomic...
In chemistry, an onium ion is a cation formally obtained by the protonation of mononuclear parent hydride of a pnictogen (group 15 of the periodic table)...
discussion St: steel (occasionally used) X: any halogen (or sometimes pseudohalogen) From organic chemistry: Ac: acetyl – (also used for the element actinium:...
byproducts. The substitution of the aromatic diazo group with a halogen or pseudohalogen is initiated by a one-electron transfer mechanism catalyzed by copper(I)...
in ordinary conditions is a yellow solid. Formally, it is an inter-pseudohalogen. Iodine azide can be prepared from the reaction between silver azide...
Cyanogen iodide or iodine cyanide (ICN) is a pseudohalogen composed of iodine and the cyanide group. It is a highly toxic inorganic compound. It occurs...
bond Halogen addition reaction Halogen lamp Halogenation Interhalogen Pseudohalogen This could also be the case for group 12, although copernicium's melting...
(CN−), has a similar structure, but behaves much like a halide ion (pseudohalogen). For example, it can form the nitride cyanogen molecule ((CN)2), similar...
is produced by hydrochlorination of ethylene: C2H4 + HCl → CH3CH2Cl Pseudohalogen Hypohalous acid group 13 hydrides group 14 hydrides group 15 hydrides...
caesium auride (Cs+Au−) upon heating. The auride anion here behaves as a pseudohalogen. The compound reacts violently with water, yielding caesium hydroxide...
Nomenclature for algae, fungi, and plants, in botany Iodine cyanide, a pseudohalogen with formula ICN or CNI ICN (SBB-CFF-FFS), a Swiss intercity tilting...
reagent in the synthesis of other organic compounds. DPPA undergoes pseudohalogen replacement of the azido group by treatment with nucleophilic reagents...
but are not limited to, an alkyl, aryl, alkynyl, allyl, halogen, or pseudohalogen group. The reaction is usually an irreversible process due to thermodynamic...
preparation of α-fluoroketones from silyl enol ethers. Behaving like a pseudohalogen, it adds to ethylene to give the ether: CF3OF + CH2CH2 → CF3OCH2CH2F...
NOCl reacts with silver thiocyanate to give silver chloride and the pseudohalogen nitrosyl thiocyanate: ClNO + AgSCN → AgCl + ONSCN Similarly, it reacts...
in their tendency to form monopositive cations. Analogously to the pseudohalogens, they have sometimes been called "pseudo-alkali metals". These substances...
or chemical compound containing the [SeH]− ion. The radical HSe is a pseudohalogen. Hydroselenide can be a ligand in transition metal complexes where it...
anion which has a hydrogen atom connected to a tellurium atom. HTe is a pseudohalogen. Organic compounds containing the -TeH group are called tellurols. "Tellanide"...
Thiocyanogen, (SCN)2, is a pseudohalogen derived from the pseudohalide thiocyanate, [SCN]−, with behavior intermediate between dibromine and diiodine...
are used to form polyhalides. Similar compounds exist with various pseudohalogens, such as the halogen azides (FN3, ClN3, BrN3, and IN3) and cyanogen...
(the molecule, the usual form of chlorine). Likewise in describing pseudohalogens, 氰 (qíng) may on occasion mean a single CN− cyanide ion (e.g. as in...
Fluorine azide or triazadienyl fluoride is a yellow green gas composed of nitrogen and fluorine with formula FN3. Its properties resemble those of ClN3...
Chlorine azide (ClN3) is an inorganic compound that was discovered in 1908 by Friedrich Raschig. Concentrated ClN3 is notoriously unstable and may spontaneously...
Cyanogen azide is a chemical compound with the chemical formula CN4, or more precisely −N=N+=N−C≡N. It is an azide compound of carbon and nitrogen. It...
Cyanogen fluoride (molecular formula: FCN; IUPAC name: carbononitridic fluoride) is an inorganic linear compound which consists of a fluorine in a single...
Bromine azide is an explosive inorganic compound with the formula BrN3. It has been described as a crystal or a red liquid at room temperature.[citation...
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