1. How would 13C NMR spectrum of ferrocene differ from acetylferrocene? 2. How a

Question

1. How would 13C NMR spectrum of ferrocene differ from acetylferrocene?
2. How are the IR spectrums of acetylferrocene and ferrocene different?
3. In the column chromatography diacetylferrocene remains at the top. Explain the order of elution of ferrocene and acetylferrocene and why diacetylferrocene is retained in the column. 1. How would 13C NMR spectrum of ferrocene differ from acetylferrocene?
2. How are the IR spectrums of acetylferrocene and ferrocene different?
3. In the column chromatography diacetylferrocene remains at the top. Explain the order of elution of ferrocene and acetylferrocene and why diacetylferrocene is retained in the column.
2. How are the IR spectrums of acetylferrocene and ferrocene different?
3. In the column chromatography diacetylferrocene remains at the top. Explain the order of elution of ferrocene and acetylferrocene and why diacetylferrocene is retained in the column.

Explanation / Answer

1. There will be an extra peak at 2-2.7 ppm in 13C nmr of acetyl ferrocene because of the acetyl group (C=O)

2. The IR spectra of acetylferrocene shows an extra peak at 1715 1/cm due to the presence of C=O group, which is absent in ferrocene

3. Because acetylferrocene is polar and assymmetric molecule, it may be retained in the column and eluted after ferrocene.

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