diazonium salt


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diazonium salt

n
(Elements & Compounds) any of a class of compounds with the general formula ArN:NM+, where Ar is an aryl group and M is a metal atom; made by the action of nitrous acid on aromatic amines and used in dyeing
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After 40 min of continuous stirring, the suspension of diazonium salt was added with cold solution of N,N-bis(2-hydroxyethyl)aniline (0.80 g, 4.4 mmol), which was previously dissolved in absolute alcohol, followed by the addition of anhydrous sodium acetate (3 g).
The main aim of this method is measurement of wave length of azo-dye which is formed by the reaction of 1-naphthylamine with diazonium salt, formed by the reaction of sulphanilic acid with nitrous acid (Figure 2A) [43].
A diazonium salt of 4-aminobenzonitrile was prepared by adding an aqueous solution of sodium nitrite (0.37 g, 5.5 mmol in 3 mL of water) into a solution of 4-aminobenzonitrile (0.54 g, 4.5 mmol) in a homogeneous mixture of 1.3 mL of sulfuric acid and 18 mL of glacial acetic acid.
This study reports a simple FI spectrophotometric method for the determination of ANTU in natural waters, based on the conversion of nitrite into nitrous acid, subsequent diazotization of sulphanilic acid, and formation of the diazonium salt. The diazonium salt is coupled with 1-naphthylamine, the hydrolysed product of ANTU under alkaline conditions to form 4-(sulphophenylazo)-1-naphthylamine [9, 21].
Then, the mixture was cooled at a temperature from zero to -4[degrees]C, sodium nitrite (0.28 g, 4 mmol) in 2 mL of water was added portionwise at a temperature of -4[degrees]C to form the corresponding diazonium salt 2, and the diazonium salt formed was added to a mixture of 4-(substituted imino)pentan-2-one derivatives 3 (2 mmol) [27] in ethanol (15 mL) slowly under the same temperature allowing the mixture to stir at room temperature for an additional 3 hours.
In this work, we have proposed an innovative and simple approach to achieve chemically functionalized boron nitride nanotubes, which were abundantly decorated by aniline groups through the hydrolysis of the diazonium salt. The mechanism of the reaction was also studied, which suggested that the high active anilinocarbocations generated by the hydrolysis of diazonium salt reacted not only with N active point, but also with B active point on the surface of BNNTs.
The indoxyl that is liberated combines with a diazonium salt in order to produce a violet coloured azole dye.
The test involves mixing the samples with Fast Blue BB diazonium salt. Under alkaline conditions, diazonium salt specifically couples with phenolics, forming stable complexes that can be measured directly.
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. Under alkaline conditions, diazonium salt specifically couples with phenolics to form stable complexes that can be directly measured.
Choi, "One-step modification of various electrode surfaces using diazonium salt compounds and the application of this technology to electrochemical DNA (E-DNA) sensors," Electrochimica Acta, vol.
In this example ferrocene is added to a layer of ethynylbenzene diazonium salt. The method could allow for new types of chemical sensors like 'electronic noses.'