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sir,can you please explain what are stereo isomers,optical and configurational isomers............?

6 years ago


Answers : (1)


Dear Gayatri

Isomers are molecules that have the same molecular formula, but have a different arrangement of the atoms in space. That excludes any different arrangements which are simply due to the molecule rotating as a whole, or rotating about particular bonds.

In stereoisomerism, the atoms making up the isomers are joined up in the same order, but still manage to have a different spatial arrangement. Optical isomerism is one form of stereoisomerism.

Optical isomers are named like this because of their effect on plane polarised light.

A configurational stereoisomer is a stereoisomer of a reference molecule that has the opposite configuration at a stereocenter (e.g. R- vs S- or E- vs Z-). This means that configurational isomers can only be interconverted by breaking covalent bonds to the stereocenter, for example by inverting the configurations of some or all of the stereocenters in a compound.

All the best


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6 years ago

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