Is the compound in the picture chiral or achiral?
I think it should be achiral for the following reasons:
There is free rotation. I know, but for every configuration produced by free rotation there is an exactly opposite configuration.
Also at certain point of time all the groups can come to the same plane.
This question is from my textbook exercise. And the answer says it is chiral. But I've no idea why. Also is it optically active or inactive?
EDIT:@K_P gave a very useful article related to these type of compounds:
