Question

identify all the major peaks and functional groups in this IR of DIBENZALACETONE

I R-NIDA-20784 : KBR DISC 1-N0-2990 SCORE I SORS-NO-4393 5-DIPHENYL-1.4- PENTADIEN-3-ONE C AH 0 2000 1500 1000 4000 3000 HAVENUHBERI- CH=CH -CH=CH 3083 79 3055 66 3026 88 1673 62 16514 1628 30 1696 10 1676 231216 68 1497 471196 16 1158 86 1946 19 1102 62 1309 60 1078 72 1285 64 1029 79 1260 70 984 9 924 72 885 53 04979 762 754 38 730 79 696 677 72 598 68 560 58 548 79 529 55 489 72 48162

Answer 1

C Bibengalavetone O-cm-C#g=cn=c0 - Aromatic C# stretching at 3083, 3055, 3028 cnote → C, B unsaturated costonyl stretching at 1643 cret > Alkene cec stretching at 1628, 2651 cons! → Aromatic C=c stretching at 1448, 1497, 1576 crd?