What Is Vinylic Atom

Vinylic compounds can produce vinylic polymers such as pvc pvf pvac etc.

What is vinylic atom.

Now consider 2 cyclohexenone below. In the given compound carbon at number 3 is known as vinylic carbon because it is bonded to double bonded carbon atom. The libretexts libraries are powered by mindtouch and are supported by the department of education open textbook pilot project the uc davis office of the provost the uc davis library the california state university affordable learning solutions program and merlot. The libretexts libraries are powered by mindtouch and are supported by the department of education open textbook pilot project the uc davis office of the provost the uc davis library the california state university affordable learning solutions program and merlot.

An allylic hydrogen is a hydrogen atom that is bonded to an allylic carbon in an organic molecule. An industrially important example is vinyl chloride precursor to pvc a plastic. In chemistry vinyl or ethenyl abbreviated as vi is the functional group with the formula c h ch 2 it is the ethylene iupac ethene molecule h 2 c ch 2 with one fewer hydrogen atom. We also acknowledge previous national science foundation support under grant numbers 1246120 1525057 and 1413739.

On a carbon skeleton sp 2 hybridized carbons or positions are often called vinylic. The allylic carbon is bonded to a carbon atom which is doubly bonded to another carbon atom. This is not surprising since the proton is not only vinylic but it is also alpha to a carbonyl group. We also acknowledge previous national science foundation support under grant numbers 1246120 1525057 and 1413739.

Key difference allylic vs vinylic carbons functional groups are very important in understanding the different physical and chemical properties of organic molecules the terms allylic and vinyl carbons indicate whether the carbon atom is bonded directly or indirectly to a double bond in a molecule. Allylic carbon atom can form stable carbocations due to electron delocalization. Unlike vinyl group. Vinylic carbocations are very unstable due to lack of p character.

The general formula for allyl is r ch 2 ch ch 2 in which the asterisk carbon atom is an allylic carbon atom. The name is also used for any compound containing that group namely r ch ch 2 where r is any other group of atoms. Notice that the proton closest to the carbonyl group is at a higher chemical shift than the proton in cyclohexene 6 05 ppm for cyclohexenone vs. The allylic position is also like a vinylic position.