C. 2. NO₂ C. match the two NMR spectra below to two of the structures. Justify your answer. The curved line through the middle is the integration of the signal. The further up the curve climbs, the more hydrogens are part of that signal. The first spectrum is annotated for you. 8 23 7 NO₂ 6 6 5 NO₂ 1H 4 8 8 (ppm) Note: The peak above 4 is a septet and the peak below 2 is a doublet. 5 4 8 (ppm) Br 3 3 6H 2 20 2 PETROL CA PPM 0 0 Note: The insets are blow-ups of the peaks at 2.5 and 1 so that you can see the splitting. There is also a peak at 2.1 that is a singlet.

C. 2. NO₂ C. match the two NMR spectra below to two of the structures. Justify your answer. The curved line through the middle is the integration of the signal. The further up the curve climbs, the more hydrogens are part of that signal. The first spectrum is annotated for you. 8 23 7 NO₂ 6 6 5 NO₂ 1H 4 8 8 (ppm) Note: The peak above 4 is a septet and the peak below 2 is a doublet. 5 4 8 (ppm) Br 3 3 6H 2 20 2 PETROL CA PPM 0 0 Note: The insets are blow-ups of the peaks at 2.5 and 1 so that you can see the splitting. There is also a peak at 2.1 that is a singlet.

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

See similar textbooks

Similar questions

show work
Which underlined proton (or sets of protons) has the greater chemical shift (that is, the higher frequency signal)?
From the spectra A-J and in the NMR Spectra tile, select the letter that corresponds to 1. methyl butanoate2. benzaldehyde3. 1-chlorobutane4. 1-chloro-2-methylpropane5. butan-2-one6. propan-2-ol7. propanal
Answer this question and explain.
Can you please help with the organic chemistry question attached?
Part 5: Putting It All Together We don't quite have all the parts of an NMR analysis yet, but we can go a long way to solving the structure of a molecule just by considering the number, chemical shifts, and in the case of 1H NMR, the integrals of the signals. In the next pages, a compilation of 'H and 13C NMR spectra are shown for all but one of the organic compounds shown below. Your job is to match the compound with the spectra. Don't just write the structure, some justification for your choices must be given as well. `NO2 HO NO2
We are trying to determine the substitution pattern on an aromatic ring by looking at the region from around 6 to 10 on the proton NMR spectrum. 10 We don't care what the side chain(s) is/are, we're just calling them F, and K (if needed). Which of the following compounds is represented by this proton NMR? F D OB OA A O C B C D
17) The partial chemical structure and ¹H NMR spectrum of 2-propanol (C3H80) are in the hydrogen atoms and label them with a subscript that corresponds to the labeled peaks in the ¹H NMR spectrum. Provide a brief rationale for your structural assignments. 11 10 7 9 8 7 6 Peak 1: 4.01 ppm 1H Septet 5 T 4 Peak 2: 2.16 ppm 1H Singlet 3 Peak 3: 1.20 ppm 6H Doublet HSP-03-214 ppm Rationale for peak assignments in structure: 2 1 0 Draw in labeled hydrogen atoms (H₁, H₂, H3) and assign them to peaks 1-3 C L-is Struct 14 2 H √3 C H² of 2-propanol H 287 11.1
5. L-dopa is used in the treatment of Parkinson's disease. Identify the four most acidic protons and arrange them in order of increasing acidity. :O: g HO: :OH 6. Coumarins are a class of natural products produced by plants and animals. It has a wide variety of applications in cosmetics, food industry and fluorescent laser dyes. In the ¹HNMR spectrum of coumarin derivate shown below, the two signals farthest downfield are at 7.38 and 8.42 pm. Identify the two protons that most likely give rise to these signals and justify your answer using resonance structures. :O:
Indapamide may be used in the treatment of hypertension and heart failure. Its structure is shown below: Q1. Using your knowledge of NMR spectroscopy, draw the THREE expected splitting patterns for the protons attached to the labelled atoms in the structure above (1, 2 and 3). You should indicate the estimated coupling constants on your diagrams in Hz, and indicate which protons cause signals to split. Can you please make sure to actually DRAW the three expected splitting patterns?
THIS CANNOT BE HAND. DRAWN!!
Propose a structure that is consistent with the following 1H NMR spectra. In each case, the molecular formula is provided. For spectra with numbers at the bottom of the signal you will need to determine the integration, others with numbers above the signal integration has been determined for you.