Abstract:We show that one of the tris(carbene)borate (TCB) ligands, namely PhB(tBuIm)3 (PhB(tBuIm)3 = phenyltris(3-tert-butylimidazol-2-ylidene)borato), is capable of stabilizing an unprecedented nucleophilic Sn(II) cation salt. Unlike known Sn(II) cations, the strong electron-donating ability of PhB(tBuIm)3 makes the cationic tin atom electron-rich, σ-donating yet slightly π-accepting, which allows for the ensuing facile oxidation with o-chloranil and S8 as well as coordination with coinage metals. The former oxidatio… Show more
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