1. (10 points) Determine the structures of the following compounds given the following 1H-NMR data sets. The molecular f

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1 10 Points Determine The Structures Of The Following Compounds Given The Following 1h Nmr Data Sets The Molecular F 1 (38.19 KiB) Viewed 24 times

1 10 Points Determine The Structures Of The Following Compounds Given The Following 1h Nmr Data Sets The Molecular F 2 (38.45 KiB) Viewed 24 times

1. (10 points) Determine the structures of the following compounds given the following 1H-NMR data sets. The molecular formula for these constitutional isomers is: C,H,O Compound A ppm splitting integration Compound B Compound C ppm splitting integration H₂ 1.8 ppm t splitting integration 3 9 2 d 3 H₂ 1.5 H₁₂ 2.6 IN 2.5 t 1 H₂ 2.1 q 2 H₂ 3.7 S 3 H₂ 3.5 ON 2 H₂ 1.9 S 3 H₂ 4.7 Р 1 Ha 4.5 Р 1 Ha 5.6 d a. S 1 He 4.8 t (dd) 1 Hi 4.8 t (dd) 1
2. (4 points) Which of the following statements is true regarding symmetrical compounds in NMR experiments? a. a symmetrical compound will always have the same number of unique carbons and hydrogens b. a symmetrical compound will never have diastereotopic hydrogens c. a symmetrical compound can be cyclic, linear, or branched d. a symmetrical compound is always achiral 3. (4 points) How many ¹H-NMR signals would be in the spectrum for the following compound? Diastereotopic hydrogens would produce different signals. (R)-2-iodo-pentane a. 5 b. 6 c. 7 d. 4 4. (4 points) What is the splitting pattern for Ha in the following structure? Ha a. singlet b. doublet c. pentet d. sextet 5. (4 points) Which of the following statements is true regarding "C-NMR a. Carbon-13 is more sensitive than hydrogen NMR b. Carbon-13 resonances appear over a broader range than H-NMR) c. Carbon-13 does not couple do adjacent carbons d. Carbon-13 nuclei cannot couple with Hydrogen nuclei