how to identify optically active compunds which don't have chiral centres? plz answer
Answers
Answer:
Okay, first thing you should know about optically active compounds : No compound that is planar , or that has a plane of symmetry will show optical activity. The compound HAS to be non-planar. Yes, there are some compounds, which do not not have a chiral carbon, that show optical activity. The best example I can give is biphenyls. Take the example of the one above (the picture ). It SHOULD have been a planar compound ( obviously, each carbon on the benzene ring is sp2 hybridised) but, because of the repulsion between the two NO2 groups attached ( it is a big group and their electron clouds repel), one of the NO2 moves out of the plane, thus making the compound optically active.
This is how a compound without chiral carbon becomes optically active. I've just tried to explain it using this example
Hope it helps !!
Explanation:
Answer:
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