On-demand switching from mono-silylene to bis-silylene to access mono-, di- and mixed coinage metal complexes.

ABSTRACT: Recently, we discovered that silaiminyl-silylene, [LSi-Si(NDipp)L] (L = PhC(NtBu)₂, Dipp = 2,6-diisopropylphenyl), can be converted from a mono-silylene to bis-silylene by using Lewis acids. This revelation led us to further use silaiminyl-silylene as a silylene-based ligand, which can coordinate to one metal center and later, on demand, release one more silylene center to coordinate to a second metal. Furthermore, an insight into the mechanism of this unusual rearrangement reaction is presented. Initially, mono-silylene complexes [LSi{M(Mes)}-Si(NDipp)L] (M = Ag, Au) were isolated. These complexes were then used as templates to access bis-silylene coordinated homo-dinuclear, [LSi{M(Mes)}-(NDipp)-{M(Mes)}SiL] (M = Ag, Au) and hetero-dinuclear, [LSi{Ag(Mes)}-(NDipp)-{Au(Me

SUBMITTER: Sun X 

PROVIDER: S-EPMC12356211 | biostudies-literature | 2025 Sep

REPOSITORIES: biostudies-literature