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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
- IIT JAM
- Chemistry (CY)
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Dinesh khalmaniya 1 Best Answer
option C Explanation- The 1,2-disubstitution pattern is very much like the 1,4 pattern, in that the two groups can only be equatorial if they are trans, so the trans isomer is more stable than the cis. The diaxial trans conformer has 3.6 kcal of steric strain, of course and is much less favored than the diequatorial conformer. The cis isomer is less stable than the trans because in it, one methyl must be axial. The cis isomer is therefore less stable than the trans by 1.8 kcal.
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Priyanshu kumar![best-answer]()
option C is correct.. Explanation:- The conformer with two methyl substituents in axial position is 3.6kcal less stable than both methyl substituents at equatorial position. Here In cis form there is one axial methyl group so 1.8 kcal less stable..
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