LAB 3 Materials

LAB 3 Materials - Name 1 You will be assigned to run 1...

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1 Pre-Lab Assignment CHAPTER-3 Characterization of Organic Compounds-II Date _____________ Section Number ________________ Name ______________________ 1. Purpose (1-3 sentences): 2. NMR can be applied for any nucleus possessing a nuclear spin. Mention at least four elemental nuclei what qualify for NMR studies. 3. What is the name of the compound used as the internal standard (reference) in NMR? 4. Why is NMR the most important technique to characterize the structure of an organic compound? 5. Draw a typical delta ( δ ) scale in ppm for hydrogen.
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2 6. What is meant by a chemical shift? 7. How does one integrate in 1 H-NMR spectroscopy? 8. What is meant by splitting (coupling) in 1 H-NMR? Show an example. 9. How do you prepare a sample (liquid and solid) for NMR analysis? Instructor/TA Initial _______________________
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3 Data Collections CHAPTER-3 Characterization of Organic Compounds-II Date _____________ Section Number ________________
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Unformatted text preview: Name ______________________ 1. You will be assigned to run 1 H-NMR of any TWO samples from the following compounds. Identify the compounds and assign all peaks. Br 2-Bromobutane O O O Propylene carbonate OH 3-Methyl-1-butanol O H 3 CO 6-Methoxy-1-tetralone 4 Laboratory Questions CHAPTER-3 Characterization of Organic Compounds-II Date _____________ Section Number ________________ Name ______________________ 1. What is meant by the “n+1” rule of spin multiplicity? 2. In describing the peaks, what is meant by the terms: s, d, t, q, and m? 3. What is meant by hydrogens labeled “a” and “b”? Write a chemical structure that illustrate (i) abba and (ii) baab. 4. How can IR be used to help interpret 1 H-NMR spectra? 5 5. Draw a 1 H-NMR spectra (showing spin multiplicity) of 2-bromo-2-methylpropane. 6. What is the difference between NMR and MRI? 7. Why is it important to use a deuterated solvent?...
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LAB 3 Materials - Name 1 You will be assigned to run 1...

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