MY IDEAS: Now going by all I have read, for chiral atoms only criteria is substituents to be different. Here two substituents are same but as we can see orientations of the substituents is different. So aren't the two substituents technically different because after all they aren't going to react the same way to plane polarized light?
I tried to break it into possibilities: Now in first case I think we could rotate around one of the sigma bonds attached to nitrogen and form a conformation with a plane of symmetry. So is in this case nitrogen not a chiral atom? Now in the second case I do think we can't prove the two substituents to be same, no matter how much we rotate. So chiral?
CONCLUSION: I am a beginner in this topic and not really confident about my thought process
Can we really use conformers of molecules to support their symmetry because after all conformers are ever changing, not stuck in one orientation?
Also what's the logic behind checking the plane and centre of symmetry of molecules? How does that relate to rotation of PPL light?
->If two substituents of a sp3 hybridized atom are identical, we say not optically active. But both being identical will rotate PPL light in same direction, so a net rotation will be produced. ->So isn't it optically active?