Hexacoordinate silicon bischelates with bulky monodentate alkyl ligands tend to ionize, while those with electron-withdrawing CF3 substituents on the chelate rings resist ionization. A hexacoordinate silicon complex with both of these structural features was prepared and was found, by its temperature-dependent 29Si NMR spectroscopy, to undergo a reversible neutral dissociation of the N→Si dative bond, which satisfies both tendencies. The results are supported by crystallographic structure analyses and by nonempirical MO calculations of isodesmic reaction energies.
|Number of pages||8|
|State||Published - 6 Jun 2005|
ASJC Scopus subject areas
- Physical and Theoretical Chemistry
- Organic Chemistry
- Inorganic Chemistry