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- QUESTION 1 The IR spectrum below belongs to an organic compound A having one nitrogen atom. Determine which structures that fits to the IR spectrum. Justify your answer by providing two (2) IR absorption peaks with their wavenumber. CN `NH2 Ahserbance /% 50- 100- 2000 Wavenumberrs/ cm 4000 3000 2F00 1F00 1000 F00Calculate the IHD of C7H6XNO and identify the important peaks in the following MS spectral data and draw the structure of the important peaks in the following MS spectral data.The DEPT-90 spectrum exhibits 6 in the 0-50 ppm region The DEPT-135 spectrum exhibits x 100 ppm region that is a positive ▾ C6 signal(s) for the CH groups: ▼ 1,2,6 ✓ in the sp2 hybridized region 100-150 C3 and C4 ▼ signal(s) (only the quaternary carbon atoms, signal(s), indicating the presence of a methylene group (CH₂) attached to an oxygen atom, are missing); there is C5 ▼ C1 and C2 ▼ and signal(s) in the 50-
- A 13C NMR spectrum is shown for a molecule with the molecular formula of CoH100. Draw the structure that best fits this data. 220 200 180 160 120 100 PPM 60 406.Label the functional groups and identify the correct compound based on the IR spectrum. % Transmittance 100 50 0 a) HO 4000 b) 3000 2000 c) d) 16 knofhysik 1500 Wavenumber (cm-¹) c) mommy isy Steps 1000 500Watch videos (LINKS) on page 2 and answer questions One infrared spectra (1) is given below. (a) Analyze the spectra and tabulate important bands. (b) Circle the possible molecular structure corresponding to the given spectra. Spectra A: 4000 2700 cm ¹ 2700- 2000 cm ¹ 2000 1600 cm 1600 - 400 cm ¹ 2.5 100 80 Region 60 40 20 0 OL 4000 (a) COMPOUNDS A OH 3500 3 -1 3000 B Absorption, cm -1 3.5 4 2500 4.5 SPECTRA 1 CH, O CH, C C CH, H H NO H wavelength (um) 5 5,5 6 2000 1800 1600 wavenumber (cm) wavelength (um) C Functional group CIC C-OH CH, 7 8 1400 1200 D 9 10 n 1000 CH₂CH₂OH - 11 Base Value 12 13 14 15 16 800 600 E Jun CH₂-C-N
- The IR spectrum below belongs to an organic compound A having one nitrogen atom. Determine which structures that fits to the IR spectrum. Justify your answer by providing two (2) IR absorption peaks with their wavenumber. CN NH2 Ahsorbance / 4 50 100- 4000 3000 2500 2000 1500 1000 500 Wavenumbers / cm8.Label the functional groups and identify the correct compound based on the IR spectrum. CI Br % Transmittance a) 100 50 0 4000 b) OH gorda d) 3000 CI CI CI CI CI c) mm 2000 1500 Wavenumber (cm-¹) Chemistry T 1000 500The IR spectrum of a sample contains absorptions at 3050, 2950, and 1620 cm-1. Towhat class of organic compound does this sample most likely belong? ExplainA) alkaneB) alkeneC) alkyneD) esterE) alcohol
- 2. Determine the structure of a molecule (C7H14N2) using the following spectral data. If you need more space, attach another piece of paper. IR: 0.9 0.8 0.7 0.6 0.5 0.4 0.3 0.2 0.1 0.0 4500 4000 3500 3000 2500 2000 1500 1000 Wavenumbers (cm-1) 'H NMR: 8 1.06 ppm (3H, doublet), 1.11 ppm (3H, triplet), 1.72 ppm (2H, quartet), 2.39 ppm (2H, triplet) 2.59 ppm (2H, quartet), 2.63 ppm (1H, sextet), 3.32 (1H, broad singlet) TransmitanceExplain which functional group is present in the compound with the following IR spectrum. Show a possible structure for the compound. C,H10 NEAT .....ו . 400 400 200 4000 300 300 3400 1200 3000 2800 2500 2430 2200 2000 1800 1800 140 1200 1000 100 WAVENUMBERS .. TTTThe boxes are labeled by ranges within the infrared spectrum, representing the wavelengths at which specific functional groups absorb energy. The scale is shown in wavenumbers, cm m¯¹. Classify each functional group according to the approximate range where it would produce a stretch on the spectrum. Note: The stretches of the functional groups may not fill the entire range. -1 3700-3200 cm¯¯ C-H aromatic 3200-3000 cm 3000-2500 cm-¹ -1 -1 O-H alcohol C=O aldehyde 2500-2000 cm-¹ Answer Bank C=N nitrile 2000-1800 cm-¹ -1 1800-1600 cm