3. C₂H18O₂: IR (3405 cm¹). 'H NMR 8 1.3 (s, 12H), 1.5 (s, 4H), 1.9 (s, 2H).

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Q: H3C Br CI H3C

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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.