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9. Substituded Aromat A portion of the 100 MHZ 'H NMR spectrum of 2-amino-5-chlorobenzoic acid in CD OD is given below.
Posted: Thu Dec 02, 2021 5:17 am
by answerhappygod
- 9 Substituded Aromat A Portion Of The 100 Mhz H Nmr Spectrum Of 2 Amino 5 Chlorobenzoic Acid In Cd Od Is Given Below 1 (61.32 KiB) Viewed 88 times
9. Substituded Aromat A portion of the 100 MHZ 'H NMR spectrum of 2-amino-5-chlorobenzoic acid in CD OD is given below. Only the resonances due to the three aromatic protons are shown. COOH NH2 H6 Hз (a) Draw a splitting diagram and analyse this CI spectrum by first-order methods, i.e. extract all relevant coupling constants (I in Hz) and H4 chemical shifts ( in ppm) by direct measurement. (b) justify the use of a first-order analysis (c) Assign the three multiplets to H3, H4 and H6 given: i. the characteristic ranges for coupling constants between aromatic protons ii. the fact that H3 will give rise to the resonance at the highest field due to the strong influence of the amino group at 780 760 740 720 700 680 (Hz from TMS) 11 of 13