Question

Explain in details the spectrum of NMR

X parts per Million : Proton 7.576 7.456 7.451 740 7414 7.418 7.414 7.363 7461 7357 7.347 7.343 7223

Answer 1

H NMR spectrum. S~ 7.3 ppm, 2H as two para-protons from two phenyl ring. fa 7.4ppm, ut s 4 - orto protons from two - phenyl ring. d27. ppm, ut as 4-mela protons from two phenyl ring. 13C NMR 8=141.2 ppm, as quartomary carbon. Sx 128.7, 1272, 127.1 ppm as remaining 3-aromatic O protons, o NMR. Ha = 7:30pm. Hb 274 ppm He=7.5ppm a He th Bc nmr. y C=141.2 ppm. C22127,2 19 Johan (3 = 128-2 ppm (4=127. lppn. o u ł g