alkynes powerpoint
TRANSCRIPT
Alkynes
• Alkynes- Hydrocarbons that have a triple bond between two carbon atoms
• Have the general formula CnH2n-2
• The molecular geometry around the C to C triple bond in an alkyne is linear. Thus, the bond angle around a triple bond is 180°
• Triple bonds are made up of one sigma bond and two pi bonds. The sigma bond is the overlapping of the s orbitals of the two atoms, while the pi bonds are the overlapping of the two p orbitals.
• A triple bond can only contain one sigma bond because there is only one s orbital in each atom.
• Unlike C-C single bonds, C-C triple bonds do not rotate freely, because the two pi bonds are not in between the two nuclei.