Carbenes are known to stabilize main group element compounds with unusual electronic properties. Herein, we report the synthesis of carbene-stabilized group 13 metal radicals (cAAC)MX2(IPr) (M = Al, X = Br 3; M = Ga, X = Cl 4) and the corresponding cations [(cAAC)MX2(IPr)][B(C6F5)4] (M = Al, X = Br 5; M = Ga, X = Cl 6), which were characterized spectroscopically and by sc-XRD. Quantum chemical calculation gave insights into their electronic structures.
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Li, B., Geoghegan, B. L., Weinert, H. M., Wölper, C., Cutsail, G. E., & Schulz, S. (2022). Synthesis and redox activity of carbene-coordinated group 13 metal radicals. Chemical Communications, 58(27), 4372–4375. https://doi.org/10.1039/d2cc00216g