EBK ORGANIC CHEMISTRY STUDY GUIDE AND S
EBK ORGANIC CHEMISTRY STUDY GUIDE AND S
6th Edition
ISBN: 9781319385415
Author: PARISE
Publisher: VST
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Chapter 13, Problem 13.65AP
Interpretation Introduction

(a)

Interpretation:

The observation in the spectrum of 2,2,3,3 tetrachlorobutane on changing temperature from 25°C to 45°C is to be stated.

Concept introduction:

Many nuclei and electrons have spin, due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. The chemical shift value depended upon its surrounded protons. Tetramethylsilane is taken as reference. Also, the spacing between split lines of NMR spectra is known as coupling constant. The angle between the two intersected planes is known as the dihedral angle.

Interpretation Introduction

(b)

Interpretation:

The reason as to why the two lines which are observed at low temperature show different intensities is to be stated.

Concept introduction:

Many nuclei and electrons have spin, due to this spin magnetic moment arises. The energy of this magnetic moment depends on the orientation of the applied magnetic field. In NMR spectroscopy, every nucleus has a spin. There is an angular momentum related to the spin. The difference between its resonance frequency and that of the reference standard is known as the chemical shift of a nucleus. The chemical shift value depended upon its surrounded protons. Tetramethylsilane is taken as reference. Also, the spacing between split lines of NMR spectra is known as coupling constant. The angle between the two intersected planes is known as the dihedral angle.

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