2. For each of the following compounds, (a) Label all of the unique sets of hydrogens...
Determine the splitting pattern for each unique hydrogen and label
the hydrogens with the correct abbreviation
Exercise 6 - Determine the splitting pattern for each unique hydrogen and label then hydrogens with the correct abbreviation.
1 I. Label the equivalent sets of protons (CH NMR) in the following compounds and then create a table with corresponding splitting pattern and integration information. (6 pts.) b"
Please ignore what's written in pencil. Please group the
hydrogens and label the different carbons.
SymW -91 More uptielt hon equatorial b) How many different 13C-absorption lines and how many 'H-resonances (disregard splitting) are observed in the spectrum of each of the following compounds? e ho spining it in NMR 1 signal = 1 unique c. CzHq to (H3C);C-(CH3)2 H3C CH3 CHCI COOH H₂C-C-GH (H3C)3C CH 2 ĆI Br ba b C₂ CH16
1. Provide the structure of the compound illustrated in the
below H-NMR spectrum. Label the sets of unequivalent hydrogens in
your structure. The formula for the structure is
C6H10O2.
2. What is the complex splitting pattern for He?
3. Draw the complex splitting pattern for He and
label the coupling constants (J).
4. Why is He more downfield than He?
Include drawings to support your answer.
1н 1H 2H ЗН Зн PPM
2. For each of the following compounds, label hydrogens in equivalent environments, indicate the integration value and multiplicity for each signal а. b. с.
Practice Problems Provide the number of hydrogens in each compound and pected in the 'H NMR of the following compounds. Draw equivalent sets H stce the examples shown above. He carbon are typically equivalent you w different carbons may be equivalent if they each compound and the number of signals that are compounds. Draw in all missing H's and label chemically ples shown above. Remember that H's attached to the same en lyou will learn about exceptions in CHEM 233)....
1. For the following compounds, label each substituent as electron donating or electron withdrawing, and indicate whether this effect is achieved via induction or resonance. ŅO2 H2N SO3H 2. Predict the TH NMR of the above benzene derivatives. For chemical shift, indicate whether the peak would likely be downfield or upfield of benzene (7.2 ppm). (Hint: think about the resonance structures that can be drawn based on your responses from above) A B # of peaks chemical shift indicate: >7.2,...
2) Which of the following statements is true regarding
symmetrical compounds in NMR experiments?
3) How many H-NMR signals would be in the spectrum for the
following compounds? Diasteretopic hyrodgens would produce
different signals.
4) What is the splitting pattern for Ha in the following
structure?
5) Which of the following statements is true regarding
C-NMR?
2. (4 points) Which of the following statements is true regarding symmetrical compounds in NMR experiments? a. a symmetrical compound will always have the...
C-NMR and H-NMR, label both unambiguously. label the hydrogens a,b,
and c’s and thr carbons 1,2, and 3’s... then label all signs on the
NMR whith those corresponding numbers and letters. also show the
splinting patterns, which is the most shielded and most deshielded
CH, CH2 -CH2 - C-o- CH2-CH3 10
.(23 pts.) Answer the following NMR questions: (a) How many 'H and 10C would ou d NMR signals would you expect for the compounds shown below7 Show answers in the boxes. 'H signals 13C signals Hsignals 13c signals Hsignal'C signals H signals 13c signals Please indicate the splitting patterns (singlet, doublet, triplet and so on) for the hydrogens in the structures below. (b) (D) Assign the indicated Hs as 'homotopic. "enantiotopic" or diastereotopic" hydrogens 8 (E) Determine the structures of...