Concept explainers
(a.1)
Interpretation:
The least and most shielded proton or set of protons in the given compounds has to be determined.
Concept introduction:
Depending upon the electron density around the proton the chemical shift values of the proton varies relative to the reference signal.
The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.
The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.
Proton or set of proton attached near to the more electronegative or electron withdrawing atoms such as F, O, N is more deshielded or less shielded and vice versa.
(a.2)
Interpretation:
To determine the least and most shielded proton or set of protons in the given compounds.
Concept introduction:
Depending upon the electron density around the proton the chemical shift values of the proton varies relative to the reference signal.
The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.
The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.
Proton or set of proton attached near to the more electronegative or electron withdrawing atoms such as F, O, N is more deshielded or less shielded and vice versa.
(a.3)
Interpretation:
To determine the least and most shielded proton or set of protons in the given compounds.
Concept introduction:
Depending upon the electron density around the proton the chemical shift values of the proton varies relative to the reference signal.
The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.
The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.
Proton or set of proton attached near to the more electronegative or electron withdrawing atoms such as F, O, N is more deshielded or less shielded and vice versa.
(b.1)
Interpretation:
To determine the least and most shielded proton or set of protons in the given compounds.
Concept introduction:
Depending upon the electron density around the proton the chemical shift values of the proton varies relative to the reference signal.
The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.
The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.
Proton or set of proton attached near to the more electronegative or electron withdrawing atoms such as F, O, N is more deshielded or less shielded and vice versa.
(b.2)
Interpretation:
To determine the least and most shielded proton or set of protons in the given compounds.
Concept introduction:
Depending upon the electron density around the proton the chemical shift values of the proton varies relative to the reference signal.
The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.
The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.
Proton or set of proton attached near to the more electronegative or electron withdrawing atoms such as F, O, N is more deshielded or less shielded and vice versa.
(c.3)
Interpretation:
To determine the least and most shielded proton or set of protons in the given compounds.
Concept introduction:
Depending upon the electron density around the proton the chemical shift values of the proton varies relative to the reference signal.
The more the shielded proton less will be its chemical shift value and the corresponding signal will be produced at the right-hand side or lower frequency region.
The more the deshielded or less shielded proton more will be its chemical shift value and the corresponding signal will be produced at the left-hand side or higher frequency region.
Proton or set of proton attached near to the more electronegative or electron withdrawing atoms such as F, O, N is more deshielded or less shielded and vice versa.
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Check out a sample textbook solutionChapter 14 Solutions
Organic Chemistry (8th Edition)
- Rank the labeled protons in order of increasing chemical shift.arrow_forwardWhich underlined proton (or sets of protons) has the greater chemical shift (that is, the higher frequency signal)?arrow_forwardFor each attached compound, first label each different type of proton and then rank the protons in order of increasing chemical shift.arrow_forward
- 2. In each molecule, label the protons a, b, c, etc. in order of increasing frequency. Protons labeled a are the lowest frequency. a) b) CIarrow_forwarda a a b d f Label the following proton sets by their number and multiplicity, e.g. proton set a is a nine hydrogen singlet (9H,singlet). i) Proton set b is a ii) Proton set e is a iii) Proton set f is aarrow_forwardWhich of the indicated protons would have the smallest pKa value? C. H. H CH3 EC H H. d. b. b. C A Moving to another question will save this response. O O O 0arrow_forward
- For each compound, first label each different type of proton and then rank the protons in order of increasing chemical shift.arrow_forwardRank the highlighted carbon atoms in each compound in order of increasing chemical shift.arrow_forwardRank the indicated protons in order of most downfield to most upfield. 2 CH3 4 H 1 H. H 3 proton 3 Choose... proton 1 Choose... proton 2 Choose... proton 4 Choose...arrow_forward
- Macroscale and Microscale Organic ExperimentsChemistryISBN:9781305577190Author:Kenneth L. Williamson, Katherine M. MastersPublisher:Brooks ColeOrganic Chemistry: A Guided InquiryChemistryISBN:9780618974122Author:Andrei StraumanisPublisher:Cengage Learning