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ESR Observation of Thermally Produced Triplet Nitrenes and Photochemically Produced Triplet Cycloheptatrienylidenes
Author(s) -
Kuzaj Martin,
Lüerssen Holger,
Wentrup Curt
Publication year - 1986
Publication title -
angewandte chemie international edition in english
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 0570-0833
DOI - 10.1002/anie.198604801
Subject(s) - carbene , nitrene , photochemistry , matrix isolation , thermal decomposition , chemistry , decomposition , spectroscopy , infrared spectroscopy , organic chemistry , physics , catalysis , quantum mechanics
The fascinating carbene‐nitrene rearrangement can be observed directly by ESR spectroscopy. In the thermal decomposition of the carbene precursor 4 (via 3 ) with subsequent matrix isolation, the product gave the same ESR signal as phenylnitrene 2 from phenylazide 1 ! In the aza‐analogous system, the seven‐membered carbene 5 is probably formed as intermediate of the rearrangemet.