Unsymmetrical Alkene
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An unsymmetrical alkene is an alkene in whose molecule the pair of ligands on one doubly bonded carbon is different from that on the other.
eg. 1:
In 1, one doubly bonded carbon bears two methyl groups and the other a methyl group and a hydrogen atom. Thus, 1 is an unsymmetrical alkene.
eg. 2:
In 2, one doubly bonded carbon bears two methyl groups and the other a methyl group and an ethyl group. Thus, 2 is an unsymmetrical alkene.
eg. 3:
In 3, one doubly bonded carbon bears a methyl group and a hydrogen atom and the other an ethyl group and a propyl group. Thus, 3 is an unsymmetrical alkene.
In an organic molecule, a carbon-carbon double bond in which the carbon atoms bear different pairs of ligands is called an unsymmetrical double bond.
eg:
see also symmetrical alkene
- Gamini Gunawardena from the OChemPal site (Utah Valley University)