Stereoisomerism

Question

Can two conformational isomers be said to be stereoisomers of each other? If so, ethane has infinite stereoisomers right?

Answer 1

Yes, but only if the conformational change involves more than just a rotation about a single bond. For Ethane, that is exactly what you are doing, you are referring to rotations about a single bond and that is excluded in the definition. No, Ethane does not have an infinite number of stereoisomers.

https://www.wyzant.com/resources/lessons/science/chemistry/stereoisomers