Persistent Organic High‐Spin Trinitrenes. Issue 37 (30th July 2019)

• Record Type: Journal Article
• Authors: Mendez‐Vega, Enrique; Mieres‐Perez, Joel; Chapyshev, Sergei V.; Sander, Wolfram
• Is Part Of: Angewandte Chemie international edition. Volume 58:Issue 37(2019)
• Page Start: 12994
• Page End: 12998
• Publication Date: 2019-07-30
• Subjects: IR spectroscopy -- matrix isolation -- nitrenes -- photochemistry -- septet; Chemistry -- Periodicals; 540
• DOI: 10.1002/anie.201904556
• Languages: English
• ISSNs: 1433-7851

Abstract

Abstract: The septet ground state trinitrenes 1, 3, 5‐trichloro‐2, 4, 6‐trinitrenobenzene and 1, 3, 5‐tribromo‐2, 4, 6‐trinitrenobenzene were isolated in inert (Ar, Ne, and Xe) as well as reactive matrices (H2, O2, and H2 O) at cryogenic temperatures. These trinitrenes were obtained in high yields by UV photolysis of the corresponding triazides and characterized by IR and UV/Vis spectroscopy. The trinitrenes, despite bearing six unpaired electrons, are remarkably unreactive towards molecular oxygen and hydrogen and are persistent in water ice up to 160 K where the water matrix starts to sublime off. Abstract : The magnificent septet : Septet trinitrenes with six unpaired electrons are unreactive toward molecular oxygen and hydrogen and persistent in water ice up to 160 K. The high yields and stability of the septet trinitrenes combined with the large magnetic interaction between the three nitrene units makes these molecules promising building blocks for the design of organic magnetic materials.