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Conformational Isomerism

Conformationa...

Question

Conformational isomers are due to :

A

Free rotation about C-C single bond

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B

Free rotation about C-H single bond

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C

Frozen rotation about C-C double bond

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D

Restricted rotation about C-C single bond

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Solution

The correct option is A Free rotation about C-C single bond
Energy for C-C rotation is available at room temperature. So, due to free rotation about the C-C single bond, compound shows different conformations.

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Similar questions

Q. Isomers which can be interconverted through rotation about

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single bond are:

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Q. Ordinarily the barrier to rotation about a carbon-carbon double bond is quite high but in compound P double bond between two rings was observed by NMR to have a rotational energy barrier of only about 20 cal/mol, showing that it has lot of single bond character.

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Q. Ordinarily the barrier to rotation about a carbon-carbon double bond is quite high but in compound P, the double bond between the two rings was observed by NMR to have a rotational barrier of only about 20 cal/mol, showing that it has lot of single bond character.

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Conformational Isomerism

Standard XII Chemistry

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