PROBLEMS Predict the chemical shifts for the signals in the proton NMR spectrum of each of the following compounds: OMe 3.13 3.16 3.14 3.15 3.17 3.18
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- Predict the chemical shifts for the signals in the ¹H NMR spectrum for the following compound. Your Answer: II IVPredict the chemical shifts for the signals in the 1H NMR spectrum for the following compound: I III II IV14) The number of proton NMR signals in the molecule shown below is (a) 1 (b) 2 (c) 3 (d) 4 (e) 5
- Carbon NMR what do these peaks mean 196 s, 142 s, 139 s, 137 s, 127 d, 23 q, 21 q, 15 q4. 5. 6. Proton NMR C₂H12 8 4.5 Proton NMR C6H1402 5 wwww Proton NMR C5H10O 6.0 7 4.0 2 5.5 6 2 3.5 2 5.0 5 4 3 Chemical Shift (ppm) 1 1 3.0 2.5 2.0 Chemical Shift (ppm) 4.5 4.0 Chemical Shift (ppm) 2 22 3.5 1.5 2 6 3 1.0 CHEM 207 1 0.5 1.6 1.4 1.2 1.0 0The explanation Cannot be hand-drawn must be typed
- Below is NMR spectra of compound. Identify whether this compound is likely to contain ethyl, isopropyl, and/or tert-butyl groups. Select all that apply. Proton NMR C₂H12 7 Ethyl Isopropyl tert-Butyl O None of the above Chemical Shift (ppm)Please provide the unknown structure for the NMR givenThe 1H-NMR spectrum of 1-bromopropane shows three signals and the 1H-NMR spectrum of 2-bromopropane shows two signals. Draw these two molecules and determine the relative integrals of each signal.
- deduce the structure of these molecules form the nmr signalThe following molecule will give two signals in the proton (1H) NMR. What is the ratio of the signal intensities for the two peaks? 1.) 2:1 2.) 2:2 3.) 3:1 4.)3:2Determine the proton multiplicity of the following molecules indicated by an arrow in a proton NMR spectrum



