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2015, Vol.44, No.1

56-57
Editor’s ChoiceOpen Access

1,3,5-[(tBu2MeSi)2Si]3C6H3: Isolable Si-centered Triradical with a High-spin Quartet Ground State

Takeshi Nozawa 1 , Masaaki Ichinohe 1 , Akira Sekiguchi 1
1 Department of Chemistry, Graduate School of Pure and Applied Sciences, University of Tsukuba
https://doi.org/10.1246/cl.140913

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Abstract
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Reductive deiodination of 1,3,5-tris[2,2-di-tert-butyl-1-(di-tert-butylmethylsilyl)-1-iodo-2-methyldisilanyl]benzene (1) with KC8 results in the formation of isolable Si-centered triradical 1,3,5-[(tBu2MeSi)2Si]3C6H3 (2), which was characterized by X-ray crystallography and electron paramagnetic resonance (EPR) spectroscopy. The quartet ground state for triradical 2 was established using EPR spectroscopy by Curie plots (5–60 K) for the characteristic Δm = 2 and Δm = 3 transitions.

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