Definition of diazonium in English:

diazonium

Syllabification: di·a·zo·ni·um
Pronunciation: /dīəˈzōnēəm
 
/

noun

[as modifier] Chemistry
  • An organic cation containing the group —2+ bonded to an organic group. Aromatic diazonium compounds are typically intensely colored and include many synthetic dyes.
    More example sentences
    • Phenol can be produced from aniline by reacting aniline with a mixture of sodium nitrite and hydrochloric acid to give benzene diazonium chloride, that when heated gently, gives off nitrogen to leave phenol.
    • The manufacture of PY74 would most likely occur through diazotization of 2-amino - 5-nitroanisole to the corresponding diazonium salt and condensation of the diazonium salt with o-acetoacetanisidide.
    • These nitrites then react to form a diazonium salt which in turn reacts with a chromogen to produce the final color.

Origin

late 19th century: coined in German from diazo- (indicating the presence of two nitrogen atoms) + the suffix -onium (from ammonium).

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