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there will be three peaks. one for the carbons in ferrocene around 70 -75. one for the carbonyl carbon (around 200) and one for the methyl group in acetyl (around alkyl region).

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12y ago

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How many C13-NMR signals would you expect to see in acetylferrocene and 1.1 diacetylferrocene?

In acetylferrocene, you would expect to see four distinct (^{13})C-NMR signals due to the presence of different carbon environments: one for the ferrocene backbone and three for the acetyl group (the carbonyl and two methyl carbons). In 1,1-diacetylferrocene, the symmetry is disrupted, leading to five distinct (^{13})C-NMR signals: one for the ferrocene backbone and four corresponding to the two acetyl groups (two methyl carbons and two carbonyl carbons).


What are the C NMR peaks for acetylferrocene?

In acetylferrocene, the carbon NMR spectrum typically shows distinct peaks corresponding to different carbon environments. You would expect to see peaks for the acetyl group (approximately 20-30 ppm for the carbonyl carbon and around 200-220 ppm for the methyl carbon) and for the ferrocene moiety, with peaks around 70-90 ppm for the bridgehead carbons and 100-130 ppm for the aromatic carbons. The exact chemical shifts can vary slightly depending on the solvent and concentration used in the NMR analysis.


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