Donor-stabilized hypercoordinated silicon(IV) chelates with cyclohexylideneimino-N ligand group: Role of substituents on ionization

N-Cyclohexylideneimino-O-(trimethylsilyl)acylimidates react smoothly with XSiCl3 (X = Me, Ph, vinyl and Cl) in a transsilylation reaction producing ionic pentacoordinate bischelates and neutral hexacoordinated complexes depending on the electronic and steric behavior of the ligands. The results indicate that cyclohexylideneimino ligand acts as a stronger donor, regardless of the coordination number, the charge, or the monodentate ligands of silicon atoms.