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What common symmetry of elements if any are found in the stable chair conformer of trans-1, 2- dichlorocyclohexane ?
  • a)
    A single mirror plane and a C2 rotational axis.
  • b)
    A single mirror plane & C3 rotational axis.
  • c)
    Two orthogonal mirror planes and a C2 rotational axis.
  • d)
    A single C2 rotational axis but no mirror plane.
Correct answer is option 'D'. Can you explain this answer?
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What common symmetry of elements if any are found in the stable chair ...

A single C2 rotational axis but no mirror plane.
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What common symmetry of elements if any are found in the stable chair ...
Symmetry Elements in the Stable Chair Conformer of trans-1,2-Dichlorocyclohexane:
- The stable chair conformer of trans-1,2-dichlorocyclohexane has a C2 rotational axis but no mirror plane.
- This means that the molecule can be rotated by 180 degrees around an axis that passes through the center of the molecule and bisects the C-C bond between the two chlorines.
- However, there is no mirror plane that would result in the molecule being superimposable on its mirror image.
- This is because the two chlorine atoms are not symmetrically arranged with respect to the C-C bond, and therefore cannot be superimposed on their mirror images.

Explanation:
- The stable chair conformation of cyclohexane is one of the most stable conformations due to the minimized steric hindrance between the substituents.
- In the case of trans-1,2-dichlorocyclohexane, the two chlorine atoms are on opposite sides of the ring, and the molecule adopts the chair conformation to minimize the repulsion between them.
- The C2 rotational axis passes through the center of the molecule and bisects the C-C bond between the two chlorines.
- However, there is no mirror plane that can bisect the molecule and divide it into two identical halves.
- The chlorine atoms are not symmetrically arranged with respect to the C-C bond, and therefore the molecule cannot be superimposed on its mirror image.
- Therefore, the molecule has a C2 rotational axis but no mirror plane, making it chiral.

Conclusion:
- The stable chair conformer of trans-1,2-dichlorocyclohexane has a single C2 rotational axis but no mirror plane.
- This is due to the asymmetric arrangement of the two chlorine atoms with respect to the C-C bond in the molecule.
- The absence of a mirror plane makes the molecule chiral, meaning it exists as a pair of enantiomers that are non-superimposable mirror images of each other.
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What common symmetry of elements if any are found in the stable chair ...
A single C2 rotational axis but no mirror plane.,,
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What common symmetry of elements if any are found in the stable chair conformer of trans-1, 2- dichlorocyclohexane ?a)A single mirror plane and a C2rotational axis.b)A single mirror plane & C3rotational axis.c)Two orthogonal mirror planes and a C2rotational axis.d)A single C2rotational axis but no mirror plane.Correct answer is option 'D'. Can you explain this answer?
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What common symmetry of elements if any are found in the stable chair conformer of trans-1, 2- dichlorocyclohexane ?a)A single mirror plane and a C2rotational axis.b)A single mirror plane & C3rotational axis.c)Two orthogonal mirror planes and a C2rotational axis.d)A single C2rotational axis but no mirror plane.Correct answer is option 'D'. Can you explain this answer? for Class 11 2024 is part of Class 11 preparation. The Question and answers have been prepared according to the Class 11 exam syllabus. Information about What common symmetry of elements if any are found in the stable chair conformer of trans-1, 2- dichlorocyclohexane ?a)A single mirror plane and a C2rotational axis.b)A single mirror plane & C3rotational axis.c)Two orthogonal mirror planes and a C2rotational axis.d)A single C2rotational axis but no mirror plane.Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 11 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for What common symmetry of elements if any are found in the stable chair conformer of trans-1, 2- dichlorocyclohexane ?a)A single mirror plane and a C2rotational axis.b)A single mirror plane & C3rotational axis.c)Two orthogonal mirror planes and a C2rotational axis.d)A single C2rotational axis but no mirror plane.Correct answer is option 'D'. Can you explain this answer?.
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