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单词 diazonium
例句 diazonium
These compounds may be divided into two classes, namely, the true diazo compounds, characterized by the grouping −N = N−, and the diazonium compounds, characterized by the grouping N ∶ N <. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus"
Oxyazo Compounds.—The oxyazo compounds are prepared by adding a solution of a diazonium salt to a cold slightly alkaline solution of a phenol. Encyclopaedia Britannica, 11th Edition, Volume 3, Part 1, Slice 1 "Austria, Lower" to "Bacon"
To the solution of the diazonium salt are now added 848 g. of dimethylaniline; this may be done rapidly, as the temperature does not rise appreciably. Organic Syntheses
For these reasons, one must assume the existence of pentavalent nitrogen in the diazonium salts, in order to account for their basic properties. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus"
Benzene diazonium hydroxide, although a strong base, reacts with the alkaline hydroxides to form salts with the evolution of heat, and generally behaves as a weak acid. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus"
These iso-diazotates are formed much more readily when the aromatic nucleus in the diazonium salt contains negative radicals. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus"
Nitrous acid converts them, in acid solution, into diazonium salts. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus"
Approximately 500 g. of cracked ice are added, and then, with mechanical stirring, the diazonium salt solution is run in as rapidly as possible. Organic Syntheses
By the addition of potassium bromide and bromine water to diazonium salts they are converted into a perbromide, e.g. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus"
Replacement of -NH2 by -OH:—The amine is diazotized and the aqueous solution of the diazonium salt is heated, nitrogen being eliminated and a phenol formed. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus"
Determinations of the electrical conductivity of the diazonium chloride and nitrate also show that the diazonium radical is strictly comparable with other quaternary ammonium ions. Encyclopaedia Britannica, 11th Edition, Volume 8, Slice 4 "Diameter" to "Dinarchus"
The most feasible method consists in the reduction of diazonium salts with sodium sulfite. Organic Syntheses
The rapid addition of the diazonium salt solution to the sodium sulfite seems to be advantageous. Organic Syntheses
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