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Home Q & A Board Science-Related Homework Help Chemistry Organic Chemistry
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FallenOne FallenOne
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The C–O absorption in carboxylic acids appears around 1250 cm-1.  The C–O absorption in an alcohol appears around 1050 cm-1. Explain why.




▸ Only compound I has resonance, causing it to have a higher stretching absorption.

▸ Compound II has more possible resonance structures, increasing the single bond character of the carbonyl group.

▸ Compound I has a C to O bond with more single bond character than that of compound II, increasing the expected stretching absorption of the bond.

▸ Only compound II has resonance, causing it to have a higher stretching absorption.

▸ Compound I has more possible resonance structures, increasing the single bond character of the carbonyl group.
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Organic Chemistry

Organic Chemistry


Edition: 4th
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nikki24303nikki24303
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