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optical isomerism 
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myEngg Colonel General
myEngg Colonel General

Posts: 223
Post optical isomerism
r the topics threo and erythro enantiomers in JEE syllabus?? :?:

Mon Nov 08, 2010 2:46 pm

Posts: 2
Post Re: optical isomerism
Hey Akhil..

Just have a look at the Article Named IIT JEE 2010 subject wise Syllabus for the 2011 Aspirants preparation
: ... eparation/

Mon Nov 08, 2010 3:00 pm
Post Re: optical isomerism

Optical isomers are molecules that differ three-dimensionally by the placement of substituents around one or more atoms in a molecule. Optical isomers were given their name because they were first able to be distinguished by how they rotated plane-polarized light. These molecules are not necessarily locked into their positions, but cannot be converted into one another, even by a rotation around a single bond. These structures can be viewed from a different angle, using Newman Projections, as shown below. (Converting between two different types of structural representations is complicated and will be covered in detail in a later section. For now, simply note that in the above structures, the chlorines were opposites in the sense of being "up" and "down," and now they are opposites in the sense of being "left" and "right.") Optical isomers are two compounds which contain the same number and kinds of atoms, and bonds (i.e., the connectivity between atoms is the same), and different spatial arrangements of the atoms, but which have non-superimposable mirror images. Each non-superimposable mirror image structure is called an enantiomer. Molecules or ions that exist as optical isomers are called chiral.

Wed Aug 03, 2011 11:28 am
myEngg Lieutenant
myEngg Lieutenant

Posts: 17
Post Re: optical isomerism
no it is not a part of jee syllabus but understanding and defination regarding diastereomers is enough...

Sun May 27, 2012 4:48 pm
myEngg Major
myEngg Major

Posts: 32
Post Re: optical isomerism
No, these two topics are not covered in the JEE main syllabus.....but you can read these one for enhancing your knowledge...

Wed Jun 25, 2014 12:08 pm
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