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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 ?
02 mol) previously prepared solution of diazonium salt was added drop wise over a period of 10-15 minutes.
The diazonium reaction chemistry allowed a controllable introduction of benzene-based defects with reduced sensitivity to natural fluctuations in the surrounding environment.
The indoxyl that is liberated combines with a diazonium salt in order to produce a violet coloured azole dye.
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.
The conjugated bilirubin assay is an endpoint assay that couples conjugated bilirubin (direct bilirubin) with the diazonium salt of 3,5-dichloroaniline at low pH to form azobilirubin.
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.
The Griess reagent is based on the two-step diazotization reaction in which acidified nitrite produces a nitrosating agent, which reacts with sulphanilic acid to produce the diazonium ion.