Organic Chemistry: A Guided Inquiry
2nd Edition
ISBN: 9780618974122
Author: Andrei Straumanis
Publisher: Cengage Learning
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Chapter L4, Problem 5E
For each structure below, use numbers to indicate chemically equivalent and distinct hydrogens,and make a table showing the predicted integration and multiplicity of each peak cluster.
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3. Look at the two spectra below, one of which is 2-methylcyclohexanol and one of which is
3methylcyclohexene. Which spectrum belongs to which compound? Explain your reasoning.
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Spectrum A
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Vieters kn1
Spectrum B
Given is the mass spectra of n-octane whre peaks are labeled accordingly. Give the letter that corresponds to the peak described below:
CH3-CH2-CH2-CH2-CH2-CH2-CH2-CH3
Which peak is considered as the base peak?
Which is peak is the Molecular ion peak?
Which the isotopic peak of the molecular ion?
Which peak reperesents the (CH3-CH2-CH2-CH2)+ fragment?
Which is the methyl ion peak?
5.
For each structure below, use numbers to indicate chemically equivalent and distinct hydrogens
and make a table showing the predicted integration and multiplicity of each peak cluster.
Br
Y
OH
""OH
CI
CI
d
OH
OH
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Chapter L4 Solutions
Organic Chemistry: A Guided Inquiry
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- Why is this the correct spectra for these molecules. Identify a specific absorption band which identifies each characteristic functional group of the molecule chosen.arrow_forward1. Identify the important peaks, give an analysis about what the compound may look like 2. Identify electronic transitions (in \( \mathrm{MeOH} \) )arrow_forwardCalculate the IHD then identify the important peaks in the following MS spectral data and draw the structure of the important peaks in the following MS spectral data. Typewritten please because I have a poor eyesight that's why I'm having a hard time understanding handwritten answer especially cursive. Thank you for understanding.arrow_forward
- How many 13C peaks should be seen in the broad-band decoupled spectrum of the structure at the right?arrow_forwardI am having trouble with the park where we determine what kind of peak each group of H's are. I am confused about counting nieghbors. Do I count every carbon thats right next to each carbon , how far do I count? Like for the group I that I marked with purple, I counted 3 adjacent carbons, but it says its a triplet. And the one labeled as a nonet ( 9 peaks ) , I dont understand where 9 came from. Can someone explain how to correctly count neighbors?arrow_forwardIn the attached H1-NMR, draw and identify each set of equivalent hydrogens in the structure and list peak they belong to in the NMR spectrum.arrow_forward
- Why are the spectra of 1,4-cyclohexanedione and 1,2-cyclohexanedione different?arrow_forwardCH3 CH3 O of OH H3C- protons it represents. letter -OCH₂CH3 For each of the above compounds, do the following: 1. List the wave numbers of all the IR bands in the 1350-4000 cm-1 region. For each one, state what bond or group it represents. d value H₂C CH3 H₂C H splitting 2. Label equivalent sets of protons with lower-case letters. Then, for each ¹H NMR signal, give the 8 value, the type of splitting (singlet, doublet etc.), and the number H # of protons O 3. Redraw the compound and label equivalent sets of carbons with lower-case letters. -OCH3 Then for each set of carbons give the & value and # of carbons it represents. letter d value # of carbonsarrow_forwardPlease discuss this in a paragraph. Which mass spectrum belongs to which compound? - differences in fragmentation in isomers- Assign each spectrum to one compound Justify your assignment by assigning relevant signals in each spectrum. Explain how you could determine which spectrum belongs to which compound.arrow_forward
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