(a)
Interpretation:
Whether the given compound is homotopic, enantiotopic or diastereotopic needs to be predicted and the chemical shifts in ( and its splitting patterns based on the hydrogen present needs to be determined, assuming that the coupling constant of all the neighboring atoms is identical.
Concept Introduction :
Compound is homotopic, if molecule has same elements which when interchanged is the same. Compound is enantiotopic, if the two groups in the molecule when replaced generates achiral compound and the resulting products formed are enantiomers. Compund is diasterotopic if the two groups in molecule when replaced would generate compounds which are diastereomers.
(b)
Interpretation:
Whether the given compound is homotopic, enantiotopic or diastereotopic needs to be predicted and the chemical shifts in ( and its splitting patterns based on the hydrogen present needs to be determined, assuming that the coupling constant of all the neighboring atoms is identical.
Concept Introduction :
Compound is homotopic, if molecule has same elements which when interchanged is the same. Compound is enantiotopic, if the two groups in the molecule when replaced generates achiral compound and the resulting products formed are enantiomers. Compund is diasterotopic if the two groups in molecule when replaced would generate compounds which are diastereomers.
(c)
Interpretation:
Whether the given compound is homotopic, enantiotopic or diastereotopic needs to be predicted and the chemical shifts in ( and its splitting patterns based on the hydrogen present needs to be determined, assuming that the coupling constant of all the neighboring atoms is identical.
Concept Introduction :
Compound is homotopic, if molecule has same elements which when interchanged is the same. Compound is enantiotopic, if the two groups in the molecule when replaced generates achiral compound and the resulting products formed are enantiomers. Compund is diasterotopic if the two groups in molecule when replaced would generate compounds which are diastereomers.
(d)
Interpretation:
Whether the given compound is homotopic, enantiotopic or diastereotopic needs to be predicted and the chemical shifts in ( and its splitting patterns based on the hydrogen present needs to be determined, assuming that the coupling constant of all the neighboring atoms is identical.
Concept Introduction :
Compound is homotopic, if molecule has same elements which when interchanged is the same. Compound is enantiotopic, if the two groups in the molecule when replaced generates achiral compound and the resulting products formed are enantiomers. Compund is diasterotopic if the two groups in molecule when replaced would generate compounds which are diastereomers.
(e)
Interpretation:
Whether the given compound is homotopic, enantiotopic or diastereotopic needs to be predicted and the chemical shifts in ( and its splitting patterns based on the hydrogen present needs to be determined, assuming that the coupling constant of all the neighboring atoms is identical.
Concept Introduction :
Compound is homotopic, if molecule has same elements which when interchanged is the same. Compound is enantiotopic, if the two groups in the molecule when replaced generates achiral compound and the resulting products formed are enantiomers. Compound is diasterotopic if the two groups in molecule when replaced would generate compounds which are diastereomers.
(f)
Interpretation:
Whether the given compound is homotopic, enantiotopic or diastereotopic needs to be predicted and the chemical shifts in ( and its splitting patterns based on the hydrogen present needs to be determined, assuming that the coupling constant of all the neighboring atoms is identical.
Concept Introduction :
Compound is homotopic, if molecule has same elements which when interchanged is the same. Compound is enantiotopic, if the two groups in the molecule when replaced generates achiral compound and the resulting products formed are enantiomers. Compound is diasterotopic if the two groups in molecule when replaced would generate compounds which are diastereomers.
(g)
Interpretation:
Whether the given compound is homotopic, enantiotopic or diastereotopic needs to be predicted and the chemical shifts in ( and its splitting patterns based on the hydrogen present needs to be determined, assuming that the coupling constant of all the neighboring atoms is identical.
Concept Introduction :
Compound is homotopic, if molecule has same elements which when interchanged is the same. Compound is enantiotopic, if the two groups in the molecule when replaced generates achiral compound and the resulting products formed are enantiomers. Compound is diasterotopic if the two groups in molecule when replaced would generate compounds which are diastereomers.
(h)
Interpretation:
Whether the given compound is homotopic, enantiotopic or diastereotopic needs to be predicted and the chemical shifts in ( and its splitting patterns based on the hydrogen present needs to be determined, assuming that the coupling constant of all the neighboring atoms is identical.
Concept Introduction :
Compound is homotopic, if molecule has same elements which when interchanged is the same. Compound is enantiotopic, if the two groups in the molecule when replaced generates achiral compound and the resulting products formed are enantiomers. Compund is diasterotopic if the two groups in molecule when replaced would generate compounds which are diastereomers.
(i)
Interpretation:
Whether the given compound is homotopic, enantiotopic or diastereotopic needs to be predicted and the chemical shifts in ( and its splitting patterns based on the hydrogen present needs to be determined, assuming that the coupling constant of all the neighboring atoms is identical.
Concept Introduction :
Compound is homotopic, if molecule has same elements which when interchanged is the same. Compound is enantiotopic, if the two groups in the molecule when replaced generates achiral compound and the resulting products formed are enantiomers. Compund is diasterotopic if the two groups in molecule when replaced would generate compounds which are diastereomers.
(j)
Interpretation:
Whether the given compound is homotopic, enantiotopic or diastereotopic needs to be predicted and the chemical shifts in ( and its splitting patterns based on the hydrogen present needs to be determined, assuming that the coupling constant of all the neighboring atoms is identical.
Concept Introduction :
Compound is homotopic, if molecule has same elements which when interchanged is the same. Compound is enantiotopic, if the two groups in the molecule when replaced generates achiral compound and the resulting products formed are enantiomers. Compund is diasterotopic if the two groups in molecule when replaced would generate compounds which are diastereomers.
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Chapter 8 Solutions
OWLv2 with LabSkills for Gilbert/Martin's Experimental Organic Chemistry: A Miniscale & Microscale Approach, 6th Edition, [Instant Access], 4 terms (24 months)
- How to compare the ratio of the multiplet areas in the 1H spectrum to the ratio of the number of H atoms ?arrow_forwardSketch the form of an A3M2X4 spectrum, where A, M, and X are protons with distinctly different chemical shifts and JAM > JAX > JMX ·arrow_forwardProve the following identities. (a) [t, p²] = 2ihp (b) [p, ²] = -2ihâarrow_forward
- What is Zeeman’s effect in NMR spectroscopy, and how does it correlate with the energy levels, and how this process impacts the NMR signal and its intensity?arrow_forwardAmong the term symbols 4S1,2D7/2,3S1,and D5/2 choose the option(s) possible in the LS coupling notation. (A) 4S1(B) 2D7/2(C) 3S1 (D) D5/2arrow_forwardDetermine the point group for EACH of the possible structural arrangements of (a) AsF2Cl3, and (b) AsF3CI2. Assuming a static structure, indicate the number and relative intensities of the signals that you would expect to see in the 19F NMR spectrum of each molecule. Hint: draw their VSEPR structures could be helpful.arrow_forward
- Calculate the magnetic fields that correspond to proton resonance frequencies of60.00 MHzarrow_forward(i) Explain how the mass of the particle(s) involved affects the separation between energy levels in quantum mechanics. (ii) Explain why the sensitivity of an NMR experiment is affected by the strength of the applied magnetic field. (iii) Explain why, to a good approximation, rotational and vibrational transitions do not change the energies of electrons.arrow_forwardBriefly, but informatively, describe the differences in the spectra generated by the following; i) Electron ionisation ii) Field ionisation iii) Chemical ionisationarrow_forward
- A scientist investigates the possibility of neutron spin resonance, and has available a commercial NMR spectrometer operating at 300 MHz for 1H nuclei. What is the NMR frequency of the neutron in this spectrometer? What is the relative population difference at room temperature? Which is the lower energy spin state of the neutron?arrow_forwardCalculate the energy(kJ)whenphotons areejected from 3molesofhydrogen atomsupon an electron transition from n = 4to n = 2. ∆?=−??(1??2−1??arrow_forwardExplain the concept of Fourier Transform IR spectroscopy ?arrow_forward
- Physical ChemistryChemistryISBN:9781133958437Author:Ball, David W. (david Warren), BAER, TomasPublisher:Wadsworth Cengage Learning,Principles of Modern ChemistryChemistryISBN:9781305079113Author:David W. Oxtoby, H. Pat Gillis, Laurie J. ButlerPublisher:Cengage Learning
- Principles of Instrumental AnalysisChemistryISBN:9781305577213Author:Douglas A. Skoog, F. James Holler, Stanley R. CrouchPublisher:Cengage Learning
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