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A trimethylsilyl group (abbreviated TMS) is a functional group in organic chemistry.This group consists of three methyl groups bonded to a silicon atom [−Si(CH 3) 3], which is in turn bonded to the rest of a molecule.
A popular stationary phase is an octadecyl carbon chain (C18)-bonded silica (USP classification L1). [7] Such materials are produced by reaction of silica gel with trimethoxyoctadecylsilane]]. The individual links involve silanol groups displacing the methoxy groups, forming an Si-O-Si bonds.
The general structure is R 1 R 2 R 3 Si−O−R 4 where R 4 is an alkyl group or an aryl group. Silyl ethers are usually used as protecting groups for alcohols in organic synthesis . Since R 1 R 2 R 3 can be combinations of differing groups which can be varied in order to provide a number of silyl ethers, this group of chemical compounds ...
This page contains tables of azeotrope data for various binary and ternary mixtures of solvents. The data include the composition of a mixture by weight (in binary azeotropes, when only one fraction is given, it is the fraction of the second component), the boiling point (b.p.) of a component, the boiling point of a mixture, and the specific gravity of the mixture.
Hexamethyldisiloxane can be produced by the addition of trimethylsilyl chloride to purified water: 2 Me 3 SiCl + H 2 O → 2 HCl + O[Si(CH 3) 3] 2. It also results from the hydrolysis of silyl ethers and other silyl-protected functional groups. HMDSO can be converted back to the chloride by reaction with Me 2 SiCl 2. [3]
This Wikipedia page provides a comprehensive list of boiling and freezing points for various solvents.
In organic chemistry, butyl is a four-carbon alkyl radical or substituent group with general chemical formula −C 4 H 9, derived from either of the two isomers (n-butane and isobutane) of butane. The isomer n -butane can connect in two ways, giving rise to two "-butyl" groups:
Tetrakis(trimethylsilyloxy)silane (TTMS) is an organosilicon compound with the formula Si[OSi(CH 3) 3] 4. This colourless liquid is used as a reagent in organic synthesis . [ 2 ]