Organic Chemistry (9th Edition)
Organic Chemistry (9th Edition)
9th Edition
ISBN: 9780321971371
Author: Leroy G. Wade, Jan W. Simek
Publisher: PEARSON
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Chapter 12, Problem 12.21SP

(a)

Interpretation Introduction

Interpretation:

The IR absorption frequency of a typical C-D bond is to be calculated.

Concept introduction:

Carbon-deuterium bond is much like a carbon-hydrogen bond. They have similar stiffness which is measured by the spring constant. Due to the extra neutron, the deuterium atom has approximately twice the mass of a hydrogen atom.

The IR absorption frequency of a bond is proportional to k/m when one of the bonds is heavier than the other.

(b)

Interpretation Introduction

Interpretation:

The functional group that appears to be present in the IR spectrum as a result of the CDCl3 impurity is to be predicted.

Concept introduction:

Carbon-deuterium bond is much like a carbon-hydrogen bond. They have similar stiffness which is measured by the spring constant. Due to the extra neutron, the deuterium atom has approximately twice the mass of a hydrogen atom.

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