Novel organic high-spin molecules [1] with quartet ground state in which elements of a carbene and a nitrene are linked by a common delocalized π electron were photochemically generated from fluorinated 4- and 2-iodo-azidobenzenes and spectroscolpically characterized in argon matrices at 4 K and 15 K. The observed IR spectra are in excellent agreement with the calculated spectra of the corresponding quartet nitrene radicals 2, 3]. The EPR spectra are in excellent agreement with with the simulation of high-spin quartet species. The zero field parameters were obtained by simulation of the experimental EPR spectra.

[1] A. Rajca, Chem. Rev. 1994, 94, 871.

[2] H. H. Wenk, W. Sander, Angew. Chem., Int. Ed. 2002, 41, 2742.

[3] H. F. Bettinger, W.Sander, J. Am. Chem. Soc. 2003, 125, 9726.

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