The given pairs of compounds have to be distinguished using NMR spectroscopy Concept Introduction : Nuclear Magnetic Resonance is a branch of spectroscopy that deals with the phenomenon found in assemblies of large number of nuclei of atoms that possess both “magnetic moments” and “ angular momentum ” is subjected to external magnetic field. If the number of neutrons and the number of protons are both even, the nucleus has no spin. If the number of neutrons plus the number of protons is odd, then the nucleus has a half-integer spin (i.e. 1/2, 3/2, 5/2). If the number of neutrons and the number of protons are both odd, then the nucleus has an integer spin (i.e. 1, 2, 3). If nuclear magnetic resonance is concerned with the magnetic properties of hydrogen nuclei, it is called proton NMR or 1 H -NMR . Its signals are based on the number of hydrogen atoms and nature of bonding. It is a technique for determining the structure of organic compounds. Of all the spectroscopic methods, it is the only one for which a complete analysis and interpretation of the entire spectrum is normally expected. To find: Distinguish the given pairs of compounds using NMR spectroscopy Find the nature of hydrogen atoms in the given pairs (a)

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Chapter 22.13, Problem 32CC

(a)

Interpretation Introduction

Interpretation: The given pairs of compounds have to be distinguished using NMR spectroscopy

Concept Introduction:

Nuclear Magnetic Resonance is a branch of spectroscopy that deals with the phenomenon found in assemblies of large number of nuclei of atoms that possess both “magnetic moments” and “angular momentum” is subjected to external magnetic field. If the number of neutrons and the number of protons are both even, the nucleus has no spin. If the number of neutrons plus the number of protons is odd, then the nucleus has a half-integer spin (i.e. 1/2, 3/2, 5/2). If the number of neutrons and the number of protons are both odd, then the nucleus has an integer spin (i.e. 1, 2, 3). If nuclear magnetic resonance is concerned with the magnetic properties of hydrogen nuclei, it is called proton NMR or ¹H-NMR. Its signals are based on the number of hydrogen atoms and nature of bonding. It is a technique for determining the structure of organic compounds. Of all the spectroscopic methods, it is the only one for which a complete analysis and interpretation of the entire spectrum is normally expected.

To find: Distinguish the given pairs of compounds using NMR spectroscopy

Find the nature of hydrogen atoms in the given pairs (a)

(b)

Interpretation Introduction

Interpretation: The given pairs of compounds have to be distinguished using NMR spectroscopy

Concept Introduction:

Nuclear Magnetic Resonance is a branch of spectroscopy that deals with the phenomenon found in assemblies of large number of nuclei of atoms that possess both “magnetic moments” and “angular momentum” is subjected to external magnetic field. If the number of neutrons and the number of protons are both even, the nucleus has no spin. If the number of neutrons plus the number of protons is odd, then the nucleus has a half-integer spin (i.e. 1/2, 3/2, 5/2). If the number of neutrons and the number of protons are both odd, then the nucleus has an integer spin (i.e. 1, 2, 3). If nuclear magnetic resonance is concerned with the magnetic properties of hydrogen nuclei, it is called proton NMR or ¹H-NMR. Its signals are based on the number of hydrogen atoms and nature of bonding. It is a technique for determining the structure of organic compounds. Of all the spectroscopic methods, it is the only one for which a complete analysis and interpretation of the entire spectrum is normally expected.

To find: Distinguish the given pairs of compounds using NMR spectroscopy

Find the nature of hydrogen atoms in the given pairs (b)

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