Novel route to silanetriols and silanediols based on acetoxysilylalkoxides

Synthesis of Cyclic Organic Carbonates Using Atmospheric Pressure CO2 and Charge-Containing Thiourea Catalysts

“…Hydrogen bond catalysts such as alcohols, polyphenols, carboxylic acids, silanediols, and squaramides have been reported recently and show promising results for the preparation of cyclic carbonates. Electrophilic activation of the epoxide via a hydrogen bonded complex is generally considered to facilitate its ring-opening in the presence of a halide anion in the rate-determining step .…”

The Influence of Weakly Coordinating Cations on the O−H⋅⋅⋅O− Hydrogen Bond of Silanol‐Silanolate Anions

“…The obtained structures are strongly affected by the presence of solvent molecules capable of hydrogen bonding. Silanols have also found application as catalysts in silanol‐hydrogen‐bond‐assisted coupling reactions [10, 11] and CO 2 fixation strategies [16, 18] …”

“…Silanols [7,8,9] and silanediols [10][11][12][13] exhibit distinct tendencies for hydrogen bond formation,w hich often result in the formation of ring structures. Meanwhile several studies are directed to interactions in silanol-silanol adducts, [8,9,[12][13][14] as well as in silanol-alcohol [15] andi ns ilanol-amine [9,16,17] aggregates. The obtained structures are strongly affected by the presence of solventm olecules capable of hydrogen bonding.…”

“…Silanols have also found application as catalysts in silanol-hydrogenbond-assisted coupling reactions [10,11] and CO 2 fixation strategies. [16,18] Weakly coordinating cations are essential for the investigation of hydrogen bonds in silanol-silanolates, which is clearly clarified by the strong potassium oxygen interaction in the representative potassium silanolate [K{O(Ph 2 SiO) 2 SiPh 2 OH}] 2 of Sullivan et al [19] The interaction of the silanolate oxygen with the potassium cation is favored over the formation of as ilanol-silanolateh ydrogen bond. Thus, ring formation including the potassiumion is observed.…”

Alkali Metallosilicates: Synthesis, Structure and Evaluation in the ROP of ϵ‐Caprolactone

“…Silanols are compounds with at least one SiÀ OH group and can be classified according to the number of hydroxyl groups attached to the silicon atom, type of the organic substituents and the degree of concatenation. [1,2] These compounds are able to coordinate to a wide range of metal cations forming molecular metallosiloxanes with a SiÀ OÀ M unit. The structure and stability of these metallosiloxanes can be tuned by the electronic and steric effects of the substituents bound to the silicon atom.…”