100 80Hal 60 0.3 40 0.5 20H0.7 09 15. 4000 3500 3000 2500 2000 1900 1800 1700 1600 1500 1400 1300 1200 1100 1000 900 800 700 650 Wavenumber, cm-! Transmittance, %
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we scanned a sample with chemical formula of C3H6O under Fourier Transform Infrared (FTIR) spectroscopy. Spectrum below was obtained. Interpret the spectrum by identifying major bands and identify the compound.
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- Following are infrared spectra of 2-methyl-1-butanol and tert-butyl methyl ether. Assign each compound its correct spectrum. Micrometers 2.5 100 3. 4. 9. 13 8 10 11 12 14 15 20 90 80 70 50 40 30 20 10 4000 3600 3200 2800 2400 2000 1800 1600 1400 1200 1000 800 600 400 Wavenumber (cm-1) Transmittance (%)3500 3000 2500 Wavenumber cm-1 2000 1500 1000 500 3920.67 3082.32 2336.05 2235.94 1699.33 1655.52 1631.23 1407.26 1255.15 1189.54 1103.98 998.71 811.98 471.79 60 Transmittance [%] 80 70 90 fundamny BRUKER 100Transmittance (%) 100% 75% 50% 25% 0% 4000 3500 3000 OH 2500 2000 Spectrum 3B 1750 حسيمة 1500 Wavenumber (cm-¹) 1250 .OH 1000 OH 750 500
- You will check the outcome of reaction via infra-red spectroscopy: what are the diagnostic functional group peaks for the following compounds? You should also indicate the stretching motions responsible for absorbance. Dilantin benzil (unreacted starting material) Urea (unreacted starting material)4000 3500 3000 2500 Wavenumbers (cm-1) 2000 20 1500 1000 500 1705.32 1354.36 1135.21 1476.83 997.91 2969.16 %Transmittance 1274.53 832.71 1427.75 953.40 553.28 790.43 1218.83 1585.98 894.05 671.73 780.29 463.73 100 CLrdocaine USP (ATR) 95- 90 85 80 75 70 65 60 55 50 45 Lidocaine 40 4000 3500 3000 2500 2000 1500 1000 Wavenumbers (cm-1) %Transmittance IZ 3243.36 3021.30 2968.47 2921.13 2799.39 1661.66 1593.98 1491.43, 1449.061 422.12,384.681371.62 1291.03264.55 1206.99 1165.931119.56 1091.78072.77. 1034.33 970.79986.39 917.91, 885.23 763.76 703.94 615.01599.90
- 1. C5H1002 10 HPM-00-297 100 TRANSMITERE 9 4000 8 T 3000 T 7 T 6 2000 5 ppm MOVENEDI T 4 3 T 1500 : T 3 1 T 2 : T 1000 6 T 1 T 0 500 200 DEPT-90 180 160 CDS-00-156 DEPT-135 140 120 100 ppm T 80 60 T 40 20 لند3. Th T 1001 90 80- 70- 60- 50- 40- 30- 20- 10- Transmittance 0- 50- 40- 30- 20- 10- zk 178 200.4 3500 39 41 50 51 125. 200 TB0 160 2H 2H ito ita Molecular Formula: C₁0H120 MW = 148 60 1H IN 3000 128.5 132.0 137.0 IR 128.0 2500 Wavenumber (cm-1) ¹HNMR 13 CNMR 2000 140 120 TOO 2H 60 1500 WALL Positive El Mass Spectrum 105 148 MA 120 133 91 40 50 60 70 80 90 100 110 120 130 140 150 160 MZ 40.4 1000 + 15 t 17.7 13.0 20 परं + + 134,1 परे 4 1324 5Intensity (a.u.) 4000 3352 cm¹ 3500 3000 UNKNOWN B 1710 cm¹ 2000 1668 cm¹ 2500 Wavenumber (cm¹¹) 1500 1101 cm 1000 500
- QUESTION 5 The IR, 'H NMR and 1°C NMR spectra of compound P are shown below. The molecular formula for compound P is CsH;NO2. Identify three (3) important absorption peaks on the IR spectrum and indicate the bond and wavenumber associated with each peak. Elucidate the structure of compound P and assign each peak in the 'H and 13C NMR spectra. (Hint: The compound consists of more than one functional group). а. b.% transmittance alkane 4000 2.0 1.8 3500 1.6 CH (sp³) 3000 1 (nonet) .... 1.4 Molecule 2 2500 2000 wavenumber (cm-¹) 1.2 6 (doublet) 2 (quintet) 1.0 8 (ppm) 3 (triplet) 0.8 1500 0.6 0.4 1000 0.2 500 0.0Chemistry Question