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STEREO ISOMERISM, ISOMERISM, The phenomenon in which the two
isomeric…
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ISOMERISM
Structural isomerism
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Positional isomerism
The basic carbon skeleton remains the unchanged but important groups are moved around on that skeleton.
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Tautomerism
It refers to the isomer of the compound which only differs in the position of protons and electrons.
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Two or more compounds have similar chemical formulas but different structural formulas and different properties.
The phenomenon in which the two
isomeric forms can rotate the plane of
polarized light in opposite directions.
- Identical chemical and physical properties.
- Non-superimposable mirror images
- Asymmetric Carbon with chiral center.
- Also called enantiomers
- Racemic mixture.
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The phenomenon when atoms/groups
are arranged differently in space due
to the restricted rotation of bonds.
- Different physical and chemical properties
- Not interconvertible
- Cis isomers are less stable than Trans
- Cis isomers have a greater dipole moment than Trans
- Rotation about pi bond is not possible
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