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Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Suman Kumar
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Bayer calculated the angle strain by assuming planar structure of cycloalkane which was wrong
According to Bayer cyclopentane should be most stable. But According to HOC data it was found that it is not cyclopentane but cyclohexane is most stable
Because cyclohexane was stable as it has least angle strain. Cyclohexane exist in chair form which allow it to attain bond angle of 109⁰
Stability order for cycloalkane is as follows 6>7>5>4>3.
Molecule always try adopt different geometry & shape to release strain.
3 member ring has no choice. 4 member ring has kite shape & 5 membered ring has envelope shape
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