Question

Please indicate the specific bond vibrations and functional groups of

A.) 3330.96cm-1, 92.53%T

B.) 3106.45cm-1, 90.62%T

C.) 1649.02cm-1, 86.71%T

D.) 1609.53cm-1, 85.31%T

E.) 1561.03cm-1, 83.86%T

F.) 1504.87cm-1, 81.04%T

99 98- 96 94- N-H 92- 3320.96cm-1, 92.53 %T C-H 3106.45cm-1, 90.62 %T .58 % T 90- 856 6cm 88- 1 384cm-1, 88 67 59cm-1, 8806%T 1107 2cm-1, 87.67 % f 86- 1649.01am 1 ob7)1 12d potm-1 8696 %T lsphT 3e 7cm-1,483%T 1609.53cm- 84- 795 28d 1, e b4%T 1171 cm-1, 85.45 %T 1561.03cm- .80%T 82 1257.87cn, 82.63 %T 712 2cm, 82.01 %T 806.95ch-1, 7979%T 835.92cm-, 80.7%T 143341om-1, 81.7 %T 1504.87cm-1, 81.04 %1 80- 1240.77cm-1, 81.83 %T 681.42cm-1, 77.90 %T 78 77- 4000 1224.80cm-1, 78.91 %T 2000 3000 1000 650 1500 2500 cm-1 3500 Sample 004 By Administrator Date Wednesday, October 30 2019 Administrator 04

Answer 1

A.) 3330.96cm-1, 92.53%T is due to N-H stretch of amide

B.) 3106.45cm-1, 90.62%T is due to =C-H stretch of aromatic ring

C.) 1649.02cm-1, 86.71%T is due to C=O stretch of amide

D.) 1609.53cm-1, 85.31%T is due to N-H bending of amide

E.) 1561.03cm-1, 83.86%T is due to C=C stretch of aromatic ring

F.) 1504.87cm-1, 81.04%T is due to C=C stretch of aromatic ring

Normally we will observe medium-weak, multiple bands in the region 1400 - 1600 cm-1 for aromatic C=C stretch

Conclusion: Your compound is most probably an aromatic amide.

Hope this helped you!

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