Draw and name four different structural isomers with the molecular formula C7H16 using the line angle formulas

To illustrate the structural isomers of C7H16, here are four distinct line-angle structures, along with their corresponding names:

1. Heptane

  CH3-CH2-CH2-CH2-CH2-CH2-CH3

Heptane is the straight-chain isomer of C7H16, consisting of seven carbon atoms in a single continuous chain.

2. 2-Methylhexane

      CH3
       |   
  CH3-CH2-CH2-CH2-CH
                |  
               CH3

In this isomer, one of the carbon atoms on the end of the straight chain has a methyl group (C1) branching off it. This structure has a six-carbon chain with a methyl group on the second carbon.

3. 3-Methylhexane

      CH3
       |   
  CH3-CH2-CH-CH2-CH3
            |      
            CH3

This isomer features a six-carbon chain with a methyl group on the third carbon. It’s another variation of the hexane chain with a methyl branch.

4. 2,2-Dimethylpentane

      CH3
       |   
  CH3-C-CH2-CH2-CH3
       |    
      CH3

This structure has five carbon atoms in a chain and includes two methyl groups attached to the second carbon. This results in a more branched structure compared to the other variations.

These four structural isomers show different ways of arranging the same number of carbon and hydrogen atoms in various branching configurations, illustrating the concept of structural isomerism.