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Despite tremendous efforts to synthesize isolable compounds with an Si=O bond, silicon analogues of ketones that contain an unperturbed Si=O bond have remained elusive for more than 150 years. Herein, we report the synthesis of an isolable silicon analogue of a ketone that exhibits a three-coordinate silicon center and an unperturbed Si=O bond, thus representing the first example of a genuine silanone. Most importantly, this silanone does not require coordination of Lewis bases and acids and/or the introduction of electron-donating groups to stabilize the Si=O bond. The structure and properties of this unperturbed Si=O bond were examined by a single-crystal X-ray diffraction analysis, nuclear magnetic resonance spectroscopy, and theoretical calculations. Bimolecular reactions revealed high electrophilicity on the Si atom and high nucleophilicity on the O atom of this genuine Si=O bond.
This article was published in the following journal.
Name: Angewandte Chemie (International ed. in English)
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The purpose of this study is to compare difference of displacement between Polyvinyl Chloride(PVC) and Silicon double-lumen endobronchial tubes(DLTs) during changing position from supine t...
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A trace element that constitutes about 27.6% of the earth's crust in the form of SILICON DIOXIDE. It does not occur free in nature. Silicon has the atomic symbol Si, atomic number 14, and atomic weight 28.09.
Inorganic compounds that contain silicon as an integral part of the molecule.
Silicon polymers that contain alternate silicon and oxygen atoms in linear or cyclic molecular structures.
A broad family of synthetic organosiloxane polymers containing a repeating silicon-oxygen backbone with organic side groups attached via carbon-silicon bonds. Depending on their structure, they are classified as liquids, gels, and elastomers. (From Merck Index, 12th ed)
Hydrocarbon rings which contain two ketone moieties in any position. They can be substituted in any position except at the ketone groups.
Radiology is the branch of medicine that studies imaging of the body; X-ray (basic, angiography, barium swallows), ultrasound, MRI, CT and PET. These imaging techniques can be used to diagnose, but also to treat a range of conditions, by allowing visuali...