The correct name for the molecule incorrectly named 1-isopropylpropane is 2-methylpentane.
Here's the reasoning:
- The name "1-isopropylpropane" suggests that there is an isopropyl group (which is a branched group) attached to the propane backbone.
- To properly name this structure, you would recognize that the backbone is propane (three carbon atoms), and the isopropyl group is attached at the second carbon when fully drawn out.
- The correct structure would indeed be 2-methylpentane, which indicates a five-carbon chain (pentane) with a methyl group on the second carbon.
So the answer is 2-methylpentane.