Extending and changing your molecule

Before making some changes, let's reoptimize. We first select the 'Main Options' panel so the coordinates will not be visible during the optimization. Otherwise this will slow down the optimization significantly.

Select the 'Main Options' panel
Click on the optimize button

Let's try to change the CH2OH group in a COOH group.

Thus, we need to:

• remove one hydrogen
• change one hydrogen into an oxygen
• change a single bond into a double bond

After this, we will revert to the ethanol molecule.