An Isolable Bis-Silylene Oxide (“Disilylenoxane”) and Its Metal Coordination

The first isolable oxygen-bridged bis-silylene 1 has been synthesized by facile dehydrochloration of the corresponding disiloxane [LSiH(Cl)−O−SiH(Cl)L] precursor [L = PhC(NtBu)2] with LiN(SiMe3)2. Compound 1 contains three-coordinate, pyramidal Si(II) atoms in a bent disiloxane-like moiety and reacts readily with [Ni(COD)2] to afford the unique bis-silylene oxide nickel complex 3.