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An Isolable Bis(Silanone–Borane) Adduct

Luecke, Marcel‐Philip; Pens, Elron; Yao, Shenglai; Driess, Matthias

The reaction of bis(silylenyl)‐substituted ferrocene 1 with two molar equivalents of BPh3 yields the corresponding bis(silylene–borane) Lewis adduct 2. The latter is capable to activate CO2 to furnish the borane‐stabilized bis(silanone) 3 through mono‐oxygenation of the dative SiII→B silicon centers under release of CO. Removal of BPh3 from 3 with PMe3 affords the corresponding 1,3,2,4‐cyclodisiloxane and the Me3P−BPh3 adduct. All isolated new compounds were characterized and their molecular structures were determined by single‐crystal X‐ray diffraction analyses.
Published in: Chemistry – A European Journal, 10.1002/chem.202000235, Wiley