Stable spirocyclic neutral radicals: aluminium and gallium boraamidinates
Literature Information
Tristram Chivers, Dana J. Eisler, Chantall Fedorchuk, Gabriele Schatte, Heikki M. Tuononen, René T. Boeré
Stable dark red (M = Al) or dark green (M = Ga) neutral radicals {[PhB(μ-NtBu)2]2M}˙ are obtained by the oxidation of their corresponding anions with iodine, and EPR spectra supported by DFT calculations show that the spin density is equally delocalized over all four nitrogen atoms in these spiroconjugated systems.
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