Question

For each spectrum, complete the table by stating the C-H bonds and the functional groups.

100 REI NOTE 1500 RAVENUMBERTI #2 DET DOO 2000 RAVENUMBERI-

Answer 1

Swes #1 The region in b/w 2900 3 100cm the region is not cleao so, there must be at sp3 and sp2 C-H bond are present 2 (GH bending) At 1600 cmt → A beak is observed for benzene sing At 1450 - 1500am - Sp3 C-H bending or fora Benzenu ning (= bending AT peaks 700-770 out of plane ct bending is observed for oatho - Type of H - Maybe Aliphatic and benzene pootha substitielid -- structure may be t he functional group :- Mo functional group is present
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Suus#2 from the IR spectice find the groups. Type of H Aliphatic Sp3, C-H is observed at 2960 - 2850 cm? (stretch) G-H bencing observed at 1950, 13850 + Alkene @ cis 3 Troms the 3 Terminal w other No Alkene group - Alkyne No Alkyne is present No pecin -2250cmt - No Benzene ring Benzene 1) Mono 2 Ootho 3) Meta 4) Pora Fimctional maup :-4)Acid Chapad) > No peak of oud, because ito guid beak at_3300 - 2500 cm w pescort Se, No acids group is present 2 Alroho / In alcohol, peak should be present at 3650- 3200 (strom bral. But there is no peak. So it is absent- 3) Amine 1 RNH2 ✓ 2 B2NH

Sola N-H sketching Viboution are observed 3300 cm Since it is doublet and that means to comine as present like R-NH2 and 16ooom! N-H bend is also present 4) Carbonyl - Mo carbonyl group is present 1) Aldehyde 2) Ketone 3) Amide 4) Ester So, #2 , er 1 amine and sp3 Carbon is present