What is chiral? What is enantiomers, diastereomers? Number of enantiomers possible? How to count number of possible enantiomers and what are they for compounds having two, three chiral centres? What is (R) and (S) enantiomers? Identify the (R) and (S) notation for the given compounds (Drawn on boards)?

Question

Accepted Answer

Chiral molecules have non-superimposable mirror images called enantiomers. Enantiomers have opposite configurations at all chiral centers.

Chiral molecules are asymmetrical and have a mirror image that cannot be superimposed on the original molecule.
Enantiomers are pairs of molecules that are mirror images of each other but not superimposable.
Diastereomers are stereoisomers that are not mirror images of each other.
The number of possible enantiomers for a compound is 2^n, where n is the number of chiral centers.
To determine the number of possible enantiomers for compounds with two chiral centers, use 2^2 = 4. For compounds with three chiral centers, use 2^3 = 8.
(R) and (S) enantiomers refer to the configuration of chiral centers based on the Cahn-Ingold-Prelog priority rules.
Examples of (R) and (S) notation can be demonstrated by drawing compounds with chiral centers on boards.