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A Mononitrosyl Diiron(II) Compound Catalyzes the Reduction of Nitrite to Nitric Oxide

Amit Mandal1, Sayan Atta1, Amit Majumdar1

  • 1School of Chemical Sciences, Indian Association for the Cultivation of Science, 2A & 2B Raja S. C. Mullick Road, Kolkata, West Bengal 700032, India.

Inorganic Chemistry
|August 23, 2025
PubMed

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Nitrous acid is a relatively weak and unstable acid prepared in situ by the reaction of sodium nitrite and cold, dilute hydrochloric acid. In an acidic solution, the nitrous acid undergoes protonation when it loses water to form a nitrosonium ion—an electrophile. Nitrous acid reacts with primary amines to give diazonium salts. The reaction is called diazotization of primary amines.
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