Organic Chemistry: Principles and Mechanisms (Second Edition)
Organic Chemistry: Principles and Mechanisms (Second Edition)
2nd Edition
ISBN: 9780393663556
Author: Joel Karty
Publisher: W. W. Norton & Company
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Chapter 3, Problem 3.31P
Interpretation Introduction

(a)

Interpretation:

The bonding and antibonding MOs that would result from the end-on overlap of chlorine AOs in the Cl2 molecule are to be drawn.

Concept introduction:

Overlap of orbitals will result in a bonding MO if their phases in the overlapping parts are the same. In this case, the electron density increases between the nuclei of the two atoms.

The overlap will result in an antibonding MO if their phases are opposite in the overlapping parts. In this case, the electron density between the nuclei of the atoms reduces.

Interpretation Introduction

(b)

Interpretation:

The symmetry of the MOs resulting from the overlap of AOs in the Cl2 molecule is to be determined.

Concept introduction:

Symmetry of an MO depends on whether the overlap is end-on- or sideways. End-on overlap is called σ (sigma) symmetry, and sideways overlap is called π (pi) symmetry.

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