Vinyl

As the vinyl group is referred to in organic chemistry, the very reactive ethene radical ( formerly ethylene rest ), ie the atomic group R -CH = CH2. The systematic name is ethenyl group. The term " vinyl " comes from the Latin " vinum " = wine, because you earlier vinyl alcohol suspected in the wine.

Synthesis

Synthetic accessible are vinyl ethers, vinyl chloride and acrylonitrile by Reppe synthesis.

Properties and Uses

Structurally closely related is the vinyl group to the allyl group, which contains an additional -CH 2 unit. With vinyl aromatics ( as styrene ), the π - electrons are delocalized over all the double bonds. Depending on the substituents on the aromatic vinylic double bond can therefore be electron poor or rich.

Typical of vinyl groups are addition reactions. Therefore, vinyl compounds are often used as monomers in polymerization reactions. The best known example of a monomer having a vinyl group is vinyl chloride, from which by polymerization of polyvinyl chloride ( PVC) is created. Colloquially also PVC, PVC products and the pressed PVC record are referred to as vinyl.