Facile Access to a NHC-Coordinated Silicon Ring Compound with a Si=N Group and a Two-Coordinate Silicon Atom.

Facile Access to a NHC-Coordinated Silicon Ring Compound with a Si=N Group and a Two-Coordinate Silicon Atom.
Angew Chem Int Ed Engl. 2019 Jan 03;:
Authors: Lips F, Keuter J, Hepp A, Mück-Lichtenfeld C
Abstract
Reaction of the bicyclo[1.1.0]tetrasilatetraamide Si4{N(SiMe3)Dipp}4 1 (Dipp = 2,6-Diisopropylphenyl) with 5 equiv. of the N-heterocyclic carbene NHCMe4 (1,3,4,5-tetramethyl-imidazol-2-ylidene) affords a bifunctional carbene coordinated four-membered ring compound with a Si=N group and a two-coordinate silicon atom Si4{N(SiMe3)Dipp}2(NHCMe4)2(NDipp) 2. In a reaction of 2 with ¼ equiv sulfur (S8) two sulfur atoms add to the divalent silicon atom in plane and perpendicular to the plane of the Si4 ring which confirms the silylone-character of the two-coordinate silicon atom in 2.
PMID: 30604915 [PubMed - as supplied by publisher]

Source: Angewandte Chemie - January 3, 2019 Category: Chemistry Authors: Lips F, Keuter J, Hepp A, Mück-Lichtenfeld C Tags: Angew Chem Int Ed Engl Source Type: research