Draw & Edit Molecule

Introduction

Briefly explain that nearly every Gaussian calculation begins by constructing a molecular structure in GaussView.

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GaussView Interface

Figure 1. Main GaussView interface highlighting the most frequently used drawing and editing tools.

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Navigation Video

Demonstration of the GaussView drawing and editing toolbar.

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Mouse Controls

Action	Mouse
Rotate	Left Click + Drag
Translate	Right Click + Drag
Zoom	Mouse Wheel

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Drawing Atoms

Explain atom selection and placement.

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Drawing Bonds

Single, double, triple, aromatic bonds.

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Editing Atoms

• Change element
• Replace atom
• Delete atom

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Editing Bonds

• Bond order
• Delete bond

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Rings and Fragments

Explain how predefined fragments accelerate molecule building.

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Clean Structure

Describe automatic geometry cleanup.

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Measuring Molecular Geometry

• Bond length
• Bond angle
• Dihedral angle

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Saving the Molecule

• .gjf
• .com
• .mol
• .xyz

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