Draw and name the molecule for the following 3 H-NMR. С5Н100 зн| 2н ЗНІ 2H 3.0...
Draw and name the molecule for the following 3 H-NMR. CsH100 3.0 2.8 2.6 " 1.4 1.2 1.6 0.8 0.6 PPM C4H8O2 зн 1.0 PPM 0.5 C3H6O2 H
Propose a reasonable structure for the following IR and NMR: CH140 48 зн] Зн 2H 4H 0.8 0.6 PPN 1.2 1.0 1.4 1.8 1.6 2.2 2.4 2.0 2.8 2.8 3.0 ет
Draw and name the molecule for the following 3 H-NMR. C4H8O2 Зн Зн 2H TT DOM 1.0 PPM
To give you more practice with analyzing NMR spectra, match each of the following 'H-NMR spectra to one of the five possible compounds (structures below). Assign the NMR peaks to their respective hydrogens. Possible compounds: CH2. (H3 diethyl malonate p-ethylanisole OH 3-methylbutanal 1-pentene 1-propanol 6.0 2.0 4.8 4.6 4.4 4.2 4.0 3.8 3.6 3.4 3.2 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 ppm a. 1.80 1.70 1.60 1.50 1.40 1.30 3.0 ( 2.0 | 2.0 2.32...
Label NMR spectra. -2.009 "H NMR Spectrum in CDCI, B16'0 E160- 2.320 -0.894 2 2962- 622 2.B 2 .6 2 .4 2 .2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0.6 ppm 1.96 2.66 2.79
Label NMR spectra. Label Functional groups: Esters- ethyl acetate # of unique H environment local chemical environment # of H in each environment # of neighboring protons 'H NMR Spectrum in CDCI; -2.289 L2.195 TTTTTTTTTTTTTTTTTTTTTTTTT 2.8 2.6 2.4 2.2 2.0 1.6 1.6 1.4 1.2 1.6 0.8 0.6 0.4 ppm 26.07 38.09 35.84 -0.806 -0.830 0.781 -.4 1.2 1.0 0.8 0.6 0.4 ppm 35.84 2.243 2.219 - -2.269 22.195 2.6 4 .4 2.2 2.0 1.8 1.6 26.07 1.4 38.09
Instructions: For each of the following compounds: (a) Calculate the DoU for each compound; (b) use the IR spectra to interpret all pertinent stretching frequencies as well as the absence of peaks to give possible formulas of the compound and (c) confirm the structure of each compound using the NMR spectrum. Compound 2. Formula: C,H,40 1е0 80 60- 40 20- 1500 1800 2800 3508 2500 4800 3000 зн 2H 3H 4H TTTTTTTTTT T" 2.8 TI 1.0 0.8 2.0 1.6 1.4...
Please label peaks from H-NMR spec. The molecule is Secbuytlamine -3.0 L12 -2.8 -2.6 -2.4 -2.2 2.0 F1.8 1.6 F1.4 -1.2 1.0 0.8 F0.6 F0.4 F0.2 www.-o.0 -0.2 13 12 11 10 8 7 6 5 4 2 f1 (ppm) 460-
Which of the following generally produce signals between 10 - 50 ppm in 13C NMR spectroscopy? sp3-hybridized carbon atoms (methyl, methylene, and methine groups) O sp-hybridized carbon atoms as well as sp3-hybridized carbon atoms that are deshielded by electronegative atoms sp2-hybridized carbon atoms O carbon atoms of carbonyl groups Give the number of different kinds of protons the compound that shows the H NMR spectrum shown below: Proton NMR ul ilu 3.0 2.8 2.6 2.4 2.2 2.0 1.8 1.6 1.4...
Practice Problems: 1a. Analyze the given H NMR spectrum of 3-methyl-2-butanone. Explain why there are 3 different signals. Assign the signals to the correct H's. 3-methyl-2-butanone 1b. Do the observed splitting patterns follow the N+1 rule? Explain. .2 3.0 2.8 fi (ppm) 2.6 2.4 2.2 2.0 1.8 1.6 1.4 1.2 1.0 0.8 0. Be very careful: it is NOT the number of H's giving rise to a signal that determines its splitting pattern. Instead, it is the number of H's...