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Dihedral angle in staggerred form of eth...

Dihedral angle in staggerred form of ethane is

A

`0^(@)`

B

`120^(@)`

C

`60^(@)`

D

`180^(@)`

Text Solution

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The correct Answer is:
To determine the dihedral angle in the staggered form of ethane, we can follow these steps: ### Step-by-Step Solution: 1. **Understanding Ethane Structure**: Ethane (C2H6) consists of two carbon atoms, each bonded to three hydrogen atoms. The molecular formula can be represented as CH3-CH3. 2. **Newman Projection**: To visualize the dihedral angle, we can use the Newman projection. In this projection, we look down the bond connecting the two carbon atoms. 3. **Eclipsed vs. Staggered Conformation**: In the eclipsed conformation, the hydrogen atoms on the front carbon are aligned with the hydrogen atoms on the back carbon. In the staggered conformation, the hydrogen atoms are positioned so that they are as far apart as possible. 4. **Rotation to Staggered Conformation**: When the ethane molecule rotates from the eclipsed conformation to the staggered conformation, it rotates 60 degrees. 5. **Defining Dihedral Angle**: The dihedral angle is defined as the angle between the planes formed by the front and back carbon-hydrogen (C-H) bonds. 6. **Calculating the Dihedral Angle**: In the staggered conformation, the dihedral angle between the front C-H bond and the back C-H bond is 60 degrees. ### Final Answer: The dihedral angle in the staggered form of ethane is **60 degrees**. ---
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Knowledge Check

  • The difference in potential energy between eclipsed and staggered form of ethane is

    A
    4kJ/mol
    B
    12.55 kJ/mol
    C
    2 kJ/mol
    D
    44 kJ/mol

  • The dihedral angle HCH in staggered conformation of C_2H_6 is

    A
    `120^@`
    B
    `60^@`
    C
    `0^@`
    D
    `90^@`

  • The dihedral angle in the staggered conformation of C_(2)H_(6)

    A
    `120^(@)`
    B
    `60^(@)`
    C
    `0^(@)`
    D
    `90^(@)`

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    The eclipsed and staggered conformation of ethane is due to -

    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 conformer of butane has minimum energy?

    The dihedral angle between the hydrogen atoms of 2 methyl groups in staggered conformation of ethane is

    The dihedral angle between the hydrogen atoms of 2 methyl groups in staggered conformation of ethane is

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