The HNO− radical anion: A proposed intermediate in diazeniumdiolate synthesis using nitric oxide and alkoxides. Issue 1 (February 2019)

• Record Type: Journal Article
• Authors: Wang, Zhe-Chen; Li, Ya-Ke; He, Sheng-Gui; Bierbaum, Veronica M
• Is Part Of: European journal of mass spectrometry. Volume 25:Issue 1(2019)
• Page Start: 82
• Page End: 85
• Publication Date: 2019-02
• Subjects: Gas-phase ion chemistry -- hydride transfer -- nitroxyl anion -- diazeniumdiolate synthesis -- selected ion flow tube -- kinetics; Mass spectrometry -- Periodicals; Mass Spectrometry; Mass spectrometry; Periodicals; Periodicals; 543.6505
• DOI: 10.1177/1469066718799732
• Languages: English
• ISSNs: 1469-0667

Abstract

The strategy of synthesizing diazeniumdiolates (X–N(O)=NO − ) through the coexistence of nitric oxide and alkoxides (RO − ) was introduced by Wilhelm Traube 120 years ago. Today, despite the wide use of diazeniumdiolate derivatives to release nitric oxide in the treatment of cancer, the first step of the reaction mechanism for diazeniumdiolate synthesis remains a mystery and is thought to be complex. We have studied the gas-phase reactions of nitric oxide with alkoxides at room temperature. An electron-coupled hydrogen transfer is observed, and the radical anion HNO − is the only ionic product in these reactions. HNO − can further react with nitric oxide to form N2 O and HO − .