Question

what peaks do we expect to see in that of IR and NMR of E,E-1,4-diphenyl-1,3-butadiene

Answer 1

solution E, E - 1,4-diphenyl-1,3-butadiene. IR- stretching for 1678-1668 cm weak c=c disubstituted trans alkene 1658-1648 in mechium cac stretching for vinylidene- 980-gro con strong cac bending disubstituted trans alkene 895-885 as strong cac bending for vinglidene. C-H strech form for aromatic ring 3000-3100 cm ac strech for aromatic ring 1400-1600 cm3 NMR dzor 60 pponi dd) for 4h bH OH dz 7.33 ppm (m) for 2H 1 hak da da 1.40 ppm for (m) for 4H ox6.71 ppm (d) for da 7.02 ppm (d) for 24 2