INFRARED AND SI-29 NMR SPECTROSCOPIC INVESTIGATIONS ON METALLASILOXANES DERIVED FROM ORGANOSILANETRIOLS

Silanols containing one or more Si-OH groups are useful synthons for t he preparation of metallasiloxanes with novel Si-O-M frameworks. Recen t reports from our laboratory in this area were centred on the synthes is of stable organosilanetriols and their use as building-blocks for t he preparation of a wide range of metallasiloxanes soluble in organic solvents and incorporating various transition metals and main group el ements in the siloxane framework. In addition to single crystal X-ray structural investigations, infrared and Si-29 NMR spectral techniques provide useful information for elucidating the structures and type of metallasiloxanes formed in these reactions. This article summarizes th e results of studies of the TR and Si-29 NMR spectra of these compound s.