9. (a) Substitution of an amino group at the para-position of autophenone shifts the C=0 frequency from 1685 cm¯! to 1652 cm-1; whereas nitrogroup a attached at that position yields the -1 C=0 frequency to appear at 1693 cm'. Explain the shifts. (b) Why does a ß-diketone appear as two -1 broadbands at 1640 cm--1580 cm and at 3100 cm¯-2700 cm-l? (c) Discuss the effect of ring strain on the

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Q: substitution of an amino group on the para position of acetophenone shift the C=o frequency…

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NMR Spectroscopy

NMR stands for Nuclear Magnetic Resonance in which the study of different molecules is done based on the interaction of radiofrequency electromagnetic radiations with the nuclei of molecules placed in a strong magnetic field. A precise study of spectra of visible light and all bands of electromagnetic radiation is called spectroscopy.