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Labile Base‐Stabilized Silyliumylidene Ions. Non‐Metallic Species Capable of Activating Multiple Small Molecules
Author(s) -
Nougué Raphaël,
Takahashi Shintaro,
Dajnak Aymeric,
Maerten Eddy,
Baceiredo Antoine,
SaffonMerceron Nathalie,
Branchadell Vicenç,
Kato Tsuyoshi
Publication year - 2022
Publication title -
chemistry – a european journal
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.687
H-Index - 242
eISSN - 1521-3765
pISSN - 0947-6539
DOI - 10.1002/chem.202202037
Subject(s) - chemistry , formamide , reactivity (psychology) , silylene , molecule , adduct , pyridine , ligand (biochemistry) , small molecule , silane , stereochemistry , photochemistry , medicinal chemistry , organic chemistry , silicon , medicine , biochemistry , alternative medicine , receptor , pathology
Several base‐stabilized silyliumylidene ions ( 2 and 3 ) with different ligands were synthesized. Their behaviour appeared strongly dependent on the nature of ligand. Indeed, in contrast to the poorly reactive silyliumylidene ions 3 c,d stabilized by strongly donating ligands (DMAP, NHC), the silylene‐ and sulfide‐supported one ( 2‐H and 3 a ) exhibits higher reactivity toward various small molecules. Furthermore, their capability to successively activate multiple small molecules was clearly demonstrated by processes involving successive reactions with silane/formamide, CO 2 and H 2 . Moreover, HBPin adduct of 3 a ( 8‐C ) catalyzes the hydroboration of pyridine. Of particular interest, silylene‐supported silyliumylidene complex 2‐H is one of the rare species able to activate two H 2 molecules.