## Chemistry: A Molecular Approach (3rd Edition)

There are 3 structural isomers of $n-hexene$ formed by moving the position of the double bond. They are: 1. $CH_2=CH-CH_2-CH_2-CH_2-CH_3$ 2. $CH_3-CH=CH-CH_2-CH_2-CH_3$ 3. $CH_3-CH_2-CH=CH-CH_2-CH_3$
Since the hexyne molecule is linearly symmetrical, and the carbon chain is numbered to give the lowest number to the double bond, there can be 3 structural isomers of n-hexene formed by moving the position of the double bond. They are - 1. $CH_2=CH-CH_2-CH_2-CH_2-CH_3 \ ( 1-hexene)$ 2. $CH_3-CH=CH-CH_2-CH_2-CH_3 \ ( 2-hexene)$ 3. $CH_3-CH_2-CH=CH-CH_2-CH_3 \ ( 3-hexene)$