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A Stable Silanone with a Three-Coordinate Silicon Atom: A Century-Long Wait is Over


  • S.S.S. thanks the CSIR-NCL for a start-up grant, Dr. S. Pal for constant support, and the reviewers for their valuable suggestions.


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Mission accomplished: More than 100 years after first attempts at isolating a stable silanone, this task has finally been completed with the isolation of a metallosilanone complex (see Scheme). The elusive bare Si[DOUBLE BOND]O bond was made accessible by utilizing the coordination sphere of an electron-rich chromium fragment in combination with a sterically demanding saturated N-heterocyclic carbene (NHC) to protect the reactive site.