The boiling points of ethanethiol and dimethyl sulfide are 35 and 37 °C, respectively. Why are the boiling points similar? What types of intermolecular forces are responsible for this similarity?
The S—H group does not form hydrogen bonds. As a result, the intermolecular attractive forces of both the thioether and the thiol are similar. There are similar van der Waals forces in each of the compounds because they are isomers.