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6. For the compound below give the integration ratio that would be observed for each of...
I need help with all 3 problems. thank you! 6. For the compound below give the integration ratio that would be observed for each of the protons sets in the 'H NMR spectrum H Ha A) Ham4, Hb=2 B) Ha=2, Hb=2 C) Ha=2, Hba1 D) Ha=1, Hb1 E) None of the above. 7. Which of the following nuclei are capable of magnetic resonance? A) 10 B) 12c C) "P D) 14C E) none of the above 8. Which of the...
could someone help in answering these 3 questions? 1. What set of reagents will best accomplish the following transformation? NO2 A. 1) CH3CH2CH=CH2, HF; 2) H2SO4; 3) HNO3, H2SO4; 4) H20, heat; B. 1) CH3CH2CH=CH2, HF; 2) H2SO4; 3) HNO3, H2SO4 C. 1) HNO3, H2S04; 2) CH3CH2CH=CH2, HF; D. 1) CH3CH2CH=CH2, HF; 2) HNO3, H2SO4; E. none of the above 2. For the compound below give the inte ratio that would be observed for each of the protons sets in...
1. How many peaks would be observed in the 'H NMR spectrum of each compound below? 2. How many peaks would be observed in the 1"C NMR spectrum of each compound below'?
Determine the structures of the following compounds given the following 1H-NMR data sets. The molecular formula for these constitutional isomers is: C4H30 Compound A На 1.8 нь 2.5 HO 3.5 Hd. 4.5 ppm splitting integration He 4.8 t (dd) 1 не 4.8 t(dd) q t q 2 p 1 2 1 1 Compound B Ha 1.5 DI нь 2.1 НА 1.9 ppm splitting integration q S t 3 2 3 Compound C Ha 2.6 Hb 3.7 Hc 4.7 ppm splitting...
2. The protons marked Ha and Hb in the molecule below are: A) chemically equivalent B) enantitopic C) diastereotopic D) endotopic E) none of the above 3. Predict the number of signals expected in the 13C NMR spectrum of the compound shown below. 1, 2, 3, 4, or 8 7. 12.
14. Predict the integration and multiplicity of each signal that would be observed in the 'H NMR of the following compound. Do so by first identifying and labeling equivalent protons (A, B, C, etc.). Then complete the chart. Which signal will appear most downfield? Proton Label Integration Splitting Pattern is most downfield.
4. The proton NMR and IR spectra of Compound B are shown on the next page. Using the molecular formula C,H,O: (a) Calculate the index of unsaturation. (b) Assign at least three absorption bands in the IR spectrum to functional groups. (C) By considering this value in your analysis of the spectra, give the correct structure for unknown B. Integration values are given above the peaks. (d) Label all peaks in the NMR spectrum, i.e., Ha, Hb, etc., and place...
protons Ha and Hb in the following compound are Question 22 Determine the multiplicity of each signal in the expected 'H NMR spectrum of the following compound. IV v 2 VII 11 VI I- II III - IV - V- VI - VII
1. Which of the following electromagnetic radiation is used in NMR spectroscopy?A) UVB) IRC) visibleD) γ-raysE) radio wave2. Which of the following is true about the number of signals in a 1 HMMR spectrum?A) it indicates the number of neighboring protonsB) it indicates the electronic environment of neighboring protonsC) it indicates the number of different kinds of protonsD) it indicates the electronic environment of absorbing protonsE) it indicates the number of protons in the signal3. Protons Ha and Hb in...
Shown below are the starting material propiophenone (1), and the product of alpha d. bromination (2), Determine how each compound could be easily identified by HNMR of the alkyl substituent by identifying the approximate chemical shift, integration, and splitting you would observe for the protons labeled in each compound. 4pts Ph Splitting: s,d, t, q, m Proton Approx. shift, ppm Integ. На CH2 a CH3 b НЬ Ph Splitting: s,d, t, q, m Br Proton Approx. shift, ppm Integration CH...