O Macmill Compound A exists mostly in a chair conformation with an equatorial -OH group, but compound B prefers a chair conformation with an axial -OH group. OH LOH A B Offer an explanation for the observation: The ring oxygens in compound B encourage intermolecular hydrogen bonding. The -OH group naturally moves to the axial position when several compound B molecules are hydrogen bonded together. The short C-O bonds in compound B minimize 1,3-interactions. The lone pair electrons emanating from the ring oxygens in compound B allow intramolecular hydrogen bonding with the-OH hydrogen. Steric interactions between ring oxygens in compound B force the -OH group into the axial position.

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Chapter1: Chemical Foundations
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O Macmill
Compound A exists mostly in a chair conformation with an equatorial -OH group, but compound B prefers a chair
conformation with an axial -OH group.
OH
LOH
A
B
Offer an explanation for the observation:
The ring oxygens in compound B encourage intermolecular hydrogen bonding. The -OH group naturally moves to the
axial position when several compound B molecules are hydrogen bonded together.
The short C-O bonds in compound B minimize 1,3-interactions.
The lone pair electrons emanating from the ring oxygens in compound B allow intramolecular hydrogen bonding with
the-OH hydrogen.
Steric interactions between ring oxygens in compound B force the -OH group into the axial position.
Transcribed Image Text:O Macmill Compound A exists mostly in a chair conformation with an equatorial -OH group, but compound B prefers a chair conformation with an axial -OH group. OH LOH A B Offer an explanation for the observation: The ring oxygens in compound B encourage intermolecular hydrogen bonding. The -OH group naturally moves to the axial position when several compound B molecules are hydrogen bonded together. The short C-O bonds in compound B minimize 1,3-interactions. The lone pair electrons emanating from the ring oxygens in compound B allow intramolecular hydrogen bonding with the-OH hydrogen. Steric interactions between ring oxygens in compound B force the -OH group into the axial position.
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