Stereoisomerism isomerism arises due to....?
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A) Hinderal rotation of a part of the molecule about c-c single bond; this give rise to the rotational isomerism
B) restricted rotation of a part of the molecule about a double Bond or ring and chirality. These cause give rise to configuration isomerism
So Stereoisomerism maybe subdivided under two heads :-
(A) conformational isomerism - conformational isomerism are also known as rotational isomers
(B) configurational isomerism - it is the Stereoisomerism in which two stereoisomers can't be inter converted without breaking any bonds.
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Answer:
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Stereoisomers are isomers that have the same composition (that is, the same parts) but that differ in the orientation of those parts in space. There are two kinds of stereoisomers: enantiomers and diastereomers.
Two compounds that are enantiomers of each other have the same physical properties, except for the direction in which they rotate polarized light and how they interact with different optical isomers of other compounds. As a result, different enantiomers of a compound may have substantially different biological effects.
In general, if any two sp³ carbons in a ring have two different substituent groups (not counting other ring atoms) stereoisomerism is possible. This is similar to the substitution pattern that gives rise to stereoisomers in alkenes; indeed, one might view a double bond as a two-membered ring.