Concept explainers
(a)
Interpretation:
The given compounds have to be distinguished using
Concept Introduction:
NMR spectroscopy:
It is the study of the interaction between
Chemical shift: The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS(Tetramethylsilane) shows signal at 0 ppm(parts per million).
Chemical shift values for protons in different electronic environment
Types of protons | Chemical shift |
Methyl | |
methylene | |
Methine | |
Allylic | |
Alkynyl | |
Aromatic methyl | |
Alkyl halide |
Alcohol | |
Vinyl |
Aryl | |
Aldehyde | |
carboxylic |
(b)
Interpretation:
The given compounds have to be distinguished using
Concept Introduction:
NMR spectroscopy:
It is the study of the interaction between electromagnetic radiation and the nuclei of atoms and the variety of nuclei studied includes
Chemical shift: The frequency of the proton signal in the spectrum with reference to the standard compound which may be TMS(Tetramethylsilane) shows signal at 0 ppm(parts per million).
Chemical shift values for protons in different electronic environment
Types of protons | Chemical shift |
Methyl | |
methylene | |
Methine | |
Allylic | |
Alkynyl | |
Aromatic methyl | |
Alkyl halide |
Alcohol | |
Vinyl |
Aryl | |
Aldehyde | |
carboxylic |
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