# How can I convert the bond-line structure of 2-methylhexane to a Newman projection viewed along the C3-C4 bond?

Jun 18, 2015

You follow a series of steps.

#### Explanation:

Step 1. Draw the structure of 2-methylhexane.

Step 2. Convert to a wedge-dash structure at $\text{C-3}$ and $\text{C-4}$.

Step 3. Identify the groups on $\text{C-3}$ and $\text{C-4}$.

The main chain of hexane is the horizontal zig-zag line of carbon atoms.

$\text{C-1}$ is on the right.

The groups on $\text{C-3}$ are $\text{H}$, $\text{H}$, and "CH(CH"_3)_2. Those on $\text{C-4}$ are $\text{H}$, $\text{H}$, and ${\text{CH"_3"CH}}_{2}$.

Step 4. Draw a template for a Newman projection.

Step 5. Attach the groups to the carbons of your template.

View the molecule from the upper right.

The groups on $\text{C-3}$ go on the front carbon atom. Put the "CH(CH"_3)_2group on the bottom. The two $\text{H}$ atoms go on the other bonds.

The groups on $\text{C-4}$ go on the back carbon. The bulky ${\text{CH"_3"CH}}_{2}$ group goes on the top, and the two $H$ atoms go on the other bonds.

This is the most stable conformer. It has the bulky isopropyl group anti to an ethyl group.