Organic halides of this element are produced with a copper catalyst in the direct process.
Organic halides of this element are produced with a copper catalyst in the direct process. Synthesisof bonds between this element and carbon can be accomplished with the platinum-based Karstedt'scatalyst. Increased stability is conferred to carboÂ·cations when an atom of this element is placed beta tothe hypovalent carbon. Alcohol protecting groups containing ethers of this element can be removedwith tert-butylammonium fluoride. NMR shifts are calibrated in reference to a tetramethylated form ofthis element. It can be purified by chemical vapor deposition through the Siemens process. Its oxide isused to pack chromatography columns and TLC plates, and is a commonly used desiccant  (DESS-ih-kuhnt) . Various trace compounds plus this element's oxide constitute most glass. For 10 points, namethis element used in most semiconductor wafers.
Organic halides of this element are produced with a copper catalyst in the direct process.
silicon [or Si]