AlkynesMadeline Porterfield

Info

Alkynes are carbon chains containing a triple bond. Around the triple bond, the molecules bond at 180 degrees to form a linear molecular shape. The triple bond is very strong and keeps the two carbon atoms in a rigid position. A triple bond is made of one sigma and two pi bonds. This is because the s orbital can only hold two electrons, making a sigma bond. The pi bonds come from the overlapping p orbitals that can contain six electrons in the sub level.

Propyne

1- Butyne

Propyne is a linear carbon chain due to the triple bond forming a 180 bond angle. The third carbon is also in linear form since it is affected by the triple bond as well.

1- Butyne is identical to propyne except the fourth carbon. There is a bend formed by electron repulsion. The bonded electrons desire to stay away from other electrons as much as possible.

2- Butyne

2- Butyne is also a linear carbon chain due to the triple bond between the second and third carbons. The first and fourth carbons are held in a linear position as well because of the triple bond. It is as far away from the triple bond as possible.

ExtraBurning an Alkynes typically results in a sooty flame. These molecules are normally found as gases, yet will dissolve in nonpolar liquids.

Summary

Alkynes are formed from triple bonding carbons through one sigma and two pi bonds. The bond is rigid.