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Cyclohexane exists in different types of conformations. the most stable among the conformers are the chair and boat conformations. the bond angles are approximately 109.5? in both the chair and boat forms of cyclohexane. in the figure below, (i) and (iii) are the chair conformers whereas (ii) is the boat conformer. the conformations keep flipping; that is, the conformations undergo interconversions, as shown in the figure below.
in the conversion of the conformations of cyclohexane shown below, which of the following statements are true?
in the conversion from i to iii, all axial bonds become equatorial, and all equatorial bonds become axial.
in the conversion from i to ii, the dihedral angle between the hydrogen atoms on adjacent carbon atoms increases.
in the conversion from i to iii, the bond angle between the c−c−c bond of cyclohexane remains 109.5°.
in the conversion from i to ii, c−h bonds on c2, c3, c5, and c6 become neither axial nor equatorial.
in the conversion from i to ii, at c1 and c4, c−h bonds are brought closer together, increasing repulsive interactions between them.
in the conversion from i to ii, steric strain is not introduced.
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