Silylene monohydride

N-Heterocyclic Carbene-Stabilized Silylene Monohydride RSi ( NHC)H (R = rBuaSi, NHC = U,4, 5-tetramethylimidazol-2-ylidene)... 

Group 14 hydrides, in particular, silicon hydrides are of practical interest due to their widespread use in synthetic chemistry and their employment as precursors for high purity elements as well as alloys for electronic devices (1). However, the corresponding stable silicon compound of oxidation state +2 is not well known. Here we describe the syntheses of a donor—acceptor stabilized silicon(II)-monohydride starting from stabilized chloro silylene, [PhC(NfBu)2]SiCl (1) (2). Subsequently, Rivard et al. reported the synthesis of donor—acceptor stabilized silicon(II)-dihydride using N-heterocyclic carbene as a donor and BH3 as an acceptor (3). 

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