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Any of various compounds, especially an aromatic hydrocarbon, containing the cation N2 attached to an organic group.


1. (Chemistry) (modifier) of, consisting of, or containing the group, Ar-N:N-, where Ar is an aryl group: diazonium group or radical; a diazonium compound.
2. (Elements & Compounds) (modifier) of, consisting of, or containing the group, Ar-N:N-, where Ar is an aryl group: diazonium group or radical; a diazonium compound.
[C19: diazo + (amm)onium]


(ˌdaɪ əˈzoʊ ni əm)
any of a series of chemical compounds containing the group RN2-, in which R represents an aromatic hydrocarbon.
[1890–95; diaz (o) + -onium,]
ThesaurusAntonymsRelated WordsSynonymsLegend:
Noun1.diazonium - the univalent cation R-N:N- (where R is an aromatic hydrocarbon); found in salts that are used in manufacturing azo dyes
cation - a positively charged ion
References in periodicals archive ?
The first step in the synthesis of azo dyes is the conversion of amine compounds into diazonium salts.
10] reported the attachment of ATRP initiator on the surface of reduced GO via diazonium addition and subsequent polystyrene grafting.
The test involves mixing the samples with Fast Blue BB diazonium salt.
In the laboratory, the scientists used the new method to measure the amount of phenolics in the various food samples by mixing them with Fast Blue BB diazonium salt.
The isolates were phenotypically characterized by means of macro/micro-morphological and physiological features, as fermentation of glucose, maltose and sucrose; assimilation of the following carbon sources: D-Glucose, D-Galactose, D-Ribose, D-Xylose, L-Arabinose, D-Arabinose, L-Rhamnose, Sucrose, Maltose, Trealose, Cellobiose, Salicin, Melibiose, Lactose,Raffinose, Inulin, Starch, Glycerol, Erythritol, Ribitol, D-Glucitol, D-Mannitol, myo-Inositol, Lactate, Citrate, Tween 20, N-acetylglucosamine; assimilation of the following nitrogen sources: Nitrate, Nitrite, Ethylamine, Lysine, Creatine and Creatinine; starch formation; urea hydrolysis; Diazonium Blue B reaction; growth at 40 and 50[degrees]C and 50% D-Glucose, 10% NaCl/16% NaCl and in different temperatures.
McCreery's group creates single-molecule layers on conductive carbon surfaces by reacting them with organic compounds that contain diazonium ([N.
The acidified nitrite produced nitrosating agent which reacted with sulfanilic acid to produce diazonium ions.
We have developed simple devices which can simultaneously detect nitrate and nitrite ions as intensely colored diazonium salts.
2] forms a diazonium salt, which reacts with N-(1-naphthyl) ethylenediamine x 2 HCI to form an azo dye that can be detected by absorbance at a wavelength of 540 nm.
Aryl diazonium salts; new coupling agents in polymer and surface science.
The compound 1 was coupled with aromatic diazonium chloride to yield the 2-(2-mercapto-2-hydrazone-1-phenylethylidene)malononitrile derivatives 8a-c.
Finally, the 2-aminofluorene can be converted to 2-iodofluorene via a diazonium reaction.