Heterospin organic molecules: nitrene–radical linkages

2,3,5,6-Tetrafluorophenylnitren-4-yl: A Quartet-Ground-State Nitrene Radical

“…Also, a few heterospin systems combining different spin‐carrying units within one molecule have been described. As these studies were aimed at the development of molecular magnets,4 stable organic radicals were utilized, which were coupled to photochemically generated nitrene5, 6 or carbene7–9 units through m ‐ or p ‐phenylene linkers. Systems containing highly reactive radicals (e.g.…”

Matrix isolation and IR spectroscopic characterization of 3,5‐difluoropyridyl‐2,4,6‐trinitrene

“…In the last decade, much attention has been focused on explorations of high‐spin nitrenes as models of single molecular magnets . A number of quartet nitreno radicals, quintet dinitrenes, and several septet trinitrenes have been characterized by electron paramagnetic resonance (EPR) spectroscopy and some of them have been studied using Fourier transform infrared (FTIR) and UV–Vis spectroscopies. Among these spectroscopic methods, only FTIR studies provide complete information about all paramagnetic and diamagnetic products formed during the photolysis of aromatic polyazides, thus allowing one to estimate the yield of high‐spin nitrenes in such reactions.…”

2,3,5,6-Tetrafluorphenylnitren-4-yl: ein Nitrenradikal mit Quartett-Grundzustand

“…Auch einige Heterospinsysteme, bei denen verschiedene spintragende Einheiten in einem Molekül vereinigt sind, wurden beschrieben. Da diese Arbeiten auf die Entwicklung molekularer Magnete abzielen,4 kamen hier vor allem stabile organische Radikale zur Anwendung, die mit photochemisch erzeugten Nitren‐5, 6 oder Carbengruppen7–9 über m ‐ oder p ‐Phenyleneinheiten verknüpft waren. Bislang nicht untersucht wurden Verbindungen, die neben einem Nitren oder Carben ein hochreaktives Radikal, z.…”