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Organic Chemistry

Blazing goIITian

Joined:	23 Jan 2008
Post:	334

21 May 2009 12:28:46 IST

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stereochm

Engineering Entrance , Medical Entrance , AIPMT , JEE Main , AIIMS , JEE Advanced , Chemistry , Organic Chemistry

please tell the differences (in understandable language) between diastereomers,enantiomers,homomers,epimers..i m getting stuck in these questions..

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Sujit

Blazing goIITian

Joined: 11 Mar 2009

Posts: 1345

21 May 2009 16:01:49 IST

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HOMODIMERS

A dimer is a chemical or biological entity consisting of two structurally similar subunits ^[1] calledmonomers, which are held together by either intramolecular forces (covalent bonds) or weakerintermolecular forces.

The term homodimer is used when the two molecules are identical (e.g. A-A)

EPIMERS

n chemistry, epimers are diastereomers that differ in configuration of only one stereogenic center. Diastereomers are a class of stereoisomers that are non-superposable, non-mirror images of one another, unlike enantiomers which are non-superposable mirror images of one another.^[1]

DIASTEREOMERS

Diastereomers (or diastereoisomers) are stereoisomers that are not enantiomers (non-superimposable mirror images of each other).

ENANTIOMERS

n chemistry, an enantiomer is one of two stereoisomers that are non-superposable complete mirror images of each other, much as one's left and righthands are "the same" but opposite

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