Question

Why does this NMR structure not match 3-bromopropiophenone? Other forms of data lead me to believe it is. The first peak at 1.56ppm is water and peak at 7.26ppm is CDCl3.

INDEX FREQUENCY PPM HEIGHT 32.? Puise sequence: s2pu B.8 Solvent: cdc13 1598.9 Temp, 28.0 C / 299.1 K Operator: Isanna Mercury-200loca 1host" 1508.3 Relax. delay 1.000 sc PU 1 S ? 45.0 degrees Acq. tine 1.938 se Width 3201.0 Hz 8 repetitions 1504. 1499.2 10 12 OBSERVE H1, 200.0492544 M DATA PROCESSING FT size 16384 1482.B .412 7.369 1474.2 7.4 Totai time min, sec 1E 1465.8 1456-? 1449.S 90.5 151.2 1444.9 7.223 7 E 313.3 37.5 7 6 5 3 2 ppm 0.82 1.32 1.00

Answer 1

The given module 3-bromopropiophenone In NMR 'H spectroscopy, If the protons contains different chemically & mechanically different protons they show different chemical shift values in its NMR spectrum given module contains 5 different chemically protons, these shows 5 at different ppm values in NMR spectroscopy. Hw, Hb & the protons appear at aromatic region 6 - 8 ppm & Hd protons appears at ~ 2.5 ppm as triplet He protons appears at ~ 1.5 ppm as triplet protons appears as triplet due to coupling with two protons He protons appears as triplet due to coupling with two Hd protons we didn't find Hd & He peaks. Instead of these we observed signet at 4 ppm so ths is not the 1 H NHR of 3-Bromopropiophenone