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DescriptionAllylic strain and hydrogen bonding.png
English: A represents the conformation that would occur in most situations due to allylic strain. However, as shown in B a hydrogen bond can form that is energetically favorable and cancels the unfavorable allylic strain. Thus, B is the most stable conformation.
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{{Information |Description={{en|1=A represents the conformation that would occur in most situations due to allylic strain. However, as shown in B a hydrogen bond can form that is energetically favorable and cancels the unfavorable allylic strain. Thus,