Question

Identify the peaks that identify the functional groups in the IR spectrum

Unknown 9 C4H604 TRANSMITGAN 1.001- 0 900- 0.800- 0.700- 0.600- 0.500- 0.400- 0 300- 0200- 0.100- 0.000-- - 4000 IR Unknown 2000 2500 3000 1500 1000 3500 Load IR spectrum Load proton NMR Show structure Spectra are displayed using Specview Website maintained by Mark Contact me at Jennifer muryka centre edu

Answer 1

Aretching frequencies D • Aldehyde a ket o too Ester • Amide • Acid halides а) О- И Ая для са co stretching (1600 canl - 1800an!) hyde & Ketone, Acid 1700 - 1725 und 1735-1750 cand 1650-1680 and 1800 aant H & No hydrogen bonding ; - 3600 aut 1. H-bonding & Hydrogen-bonding) Intra molecular Inter molecular |(3200-3300 ant (3300 - 3400) an (2400 – 3400 sunt u 3) N-H stretching o Panine 3300, 3400 Stwo peaks for I amune] logo amine 3100 - 3500 aut the GN 22 10-2970 und 5) NO, + 1350-1550 un W C-0 1500 - 1300 cant # Unknown a C4 H604 IDU { Degree of unsaturation } → C-H+N-X+1 calon Du= 4-6 + 1 = 4-3+1=2 ek between 1500-2000 in the spectruan which and 1700-1800 ano will refers to the Isonal group peak (-c-on). This beak represents the co stretching frequency of carboxylic aud. 2 g 9 X=EU, Brah The peak between Ps around 17 functional

The other peak at ther peak at 3600 win present in the green sportu represents the stretching frequency of free hydromyl group that is it represents the oth stretching frequency without hydrogen bonding Possible stauture cu Mou ... HOT MEME-C-04 # Unknown al Cathao Du= 9-12 + 1 = 9-6+1= 4 The peak that represents the functional group is the peak present around 3600 cent 9 iven spectrum. This peak represents on stretching frequency of face hydroxyl 20-H] that means without hydrogen o bonding Possible structure Cahizo Do=4 on -H12 + c = 9 01.