Review of General Chemistry
Structure of Organic MoleculesDouble and triple bonds are referred to as
multiple bonds. These bonds are composed of a σ bond and either one or two π bonds. Because the π bonds are created by the side-to-side overlap of atomic
p orbitals, any rotation around the σ bond results in the destruction of all of the π bonds. The effect on the double bond of ethene if rotation is attempted around the σ bond is shown in Figure
1 .
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