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Concept explainers
(a)
Interpretation: The protons on the highlighted carbons of the given compound that absorbs farther downfield are to be identified.
Concept introduction: Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal. The terms, upfield and downfield expresses the relative location of signals. The meaning of upfield is to the right and of downfield is to the left.
(b)
Interpretation: The protons on the highlighted carbons of the given compound that absorbs farther downfield are to be identified.
Concept introduction: Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal. The terms, upfield and downfield expresses the relative location of signals. The meaning of upfield is to the right and of downfield is to the left.
(c)
Interpretation: The protons on the highlighted carbons of the given compound that absorbs farther downfield are to be identified.
Concept introduction: Depending upon the electron density or the concentration of electron around the proton the chemical shift values of the proton varies relative to the reference signal. The terms, upfield and downfield expresses the relative location of signals. The meaning of upfield is to the right and of downfield is to the left.
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Chapter 12C Solutions
ORGANIC CHEMISTRY (LOOSELEAF)
- Into how many peaks will each proton shown in red be split?arrow_forwardWhich proton or set of protons in each of the following compounds is the least shielded? a. Which proton or set of protons in each compound is the most shielded?arrow_forwardCan you match appropriate nmr signals (abcde) with the labeled protonsarrow_forward
- For each NMR, label any and all triplets, singlets, etc. Propose a structure that matches each NMR spectrum.arrow_forwardI. Using spectrum A (H-NMR) of the given compound, draw the corresponding COSY 2D-NMR Spectrum. II. Using spectrum A (H-NMR) and spectrum B (C-NMR) of the given compound, draw the corresponding HETCOR 2D-NMR Spectrum.arrow_forwardQUESTION 3 Using tables 22.3, 22.4, and 22.5, predict the shift for the protons attached to the atom indicated by the arrow. Report your answer in ppm to the tenths' place. Don't include the units in the answer.arrow_forward
- Organic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage LearningEBK A SMALL SCALE APPROACH TO ORGANIC LChemistryISBN:9781305446021Author:LampmanPublisher:CENGAGE LEARNING - CONSIGNMENT
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