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Stereoisomers ( different arrangements o...

Stereoisomers ( different arrangements of atoms) that can be converted into one another by roatation about single bonds are called

A

enantiomers

B

conformers

C

diasteromers

D

aromers

Text Solution

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The correct Answer is:
B
Also called conformations or rotamers, they are temporary molecular shapes that result form the rotations of group about single bonds. An analysis of the energy changes that a molecule undergoes as group rotate about single bonds is called conformational anaysis. The term conformer is normally used for low energy conformations.
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The isomers that can be interconverted through rotation around a single bond are:

Conformations are different arragements of atoms htat are interconverted by rotation about single bond. IN eclipsed conformation, the C-H bond on one carbon is directly aligned with C-H bond on the adjacent carbon. In staggered conformation, the C-H bond on one carbon bisect the H-C-H bond angle on adjacent carbon. The angle that seperates a bond on one atom form a bond on a adjacent atom is called a dihedral angle. A staggered conformation with two larger groups 180^(@) from each other is called anti. A staggered conformation with two larger group 60^(@) from each other is called gauche Identify the most conformer of 2-fluoro ethanol among the following:

Conformations are different arragements of atoms htat are interconverted by rotation about single bond. IN eclipsed conformation, the C-H bond on one carbon is directly aligned with C-H bond on the adjacent carbon. In staggered conformation, the C-H bond on one carbon bisect the H-C-H bond angle on adjacent carbon. The angle that seperates a bond on one atom form a bond on a adjacent atom is called a dihedral angle. A staggered conformation with two larger groups 180^(@) from each other is called anti. A staggered conformation with two larger group 60^(@) from each other is called gauche Which of the following is gauche conformer?

Conformations are different arragements of atoms htat are interconverted by rotation about single bond. IN eclipsed conformation, the C-H bond on one carbon is directly aligned with C-H bond on the adjacent carbon. In staggered conformation, the C-H bond on one carbon bisect the H-C-H bond angle on adjacent carbon. The angle that seperates a bond on one atom form a bond on a adjacent atom is called a dihedral angle. A staggered conformation with two larger groups 180^(@) from each other is called anti. A staggered conformation with two larger group 60^(@) from each other is called gauche Which of the following conformer of butane has minimum energy?

Isomers which can be interconverted through rotation around a single bond are

Knowledge Check

  • The isomers that can be interconverted through rotation around a single bond are:

    A
    Conformers
    B
    Diastereomers
    C
    Enantiomers
    D
    Positional isomerisms

  • Isomers which can be interconverted through rotation around a single bond are :

    A
    conformers
    B
    diastereomers
    C
    enantiomers
    D
    positional isomers

  • Spatial arrangement of atoms which can be converted one another by rotation around a C-C single bond in alkane is termed as conformers. In the above context one must remember that the rotation around the C-C single bond is

    A
    complete free
    B
    hindered by an energy barrier of 1- 100 kcal
    C
    hindered by an energy barrier of 1- 20 KJ/ol
    D
    hindered by an energy barrier of 1-20 kcal