What about the intermolecular bonds? Well, if we just examine this molecule by itself, if we simply have one molecule or one compound, that means we have no intermolecular bonds. Because in order to have an inter molecular bond, you have to have a second compound next to that compound. So if this is all by itself, we have no intermolecular bonds. If we place this pentane or some other alkane next to our neopentane, these two compounds will attract one another via intermolecular bonds. And in this case, in the case of alkanes, we have Vanderbilt forces.