GChemPaint/C3/Aromatic-Molecular-Structures/English

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VISUAL CUE NARRATION
Slide Number 1

Title Slide

Hello everyone.

Welcome to this tutorial on Aromatic Molecular Structures in GChemPaint.

Slide Number 2

Learning Objectives

In this tutorial, we will learn to convert
  • Cyclohexane to Cyclohexene and
  • Cyclohexane to Benzene

We will also

  • Create derivatives of Benzene
  • Add atoms and group of atoms to Benzene ring and
  • Merge two molecules
Slide Number 3

System Requirement

Here I am using

Ubuntu Linux OS version. 12.04 GChemPaint version 0.12.10

Slide Number 4

Pre-requisites

To follow this tutorial you should be familiar with,

GChemPaint chemical structure editor. If not, for relevant tutorials, please visit our website.

Switch to GchemPaint application. I have opened a new GChemPaint application.
Let's first add a six membered cycle to the Display area.
Click on Add a six membered cycle tool>>Click on Display area. Click on Add a six membered cycle tool.

Click on the Display area.

Click on Add a bond or change the multiplicy of the existing one tool Click on Add a bond or change the multiplicity of the existing one tool.

Add two bonds on every corner of the cycle.

Click and drag the bonds to proper position. Position the bonds in such a way that no two bonds touch each other.

To do so, click and drag the bonds to proper position.

Let's display carbon atoms at the corners of the cycle.
Right click on any one of the corner>>A submenu appears Right click on any one of the corner.

A submenu appears.

Select Atom >>click on Display symbol. Select Atom and then click on Display symbol.

Likewise I will add Carbon atoms at all the corners of the cycle.

Press capital H on the keyboard. To add Hydrogen atoms to the bonds,

Press H on the keyboard.

Click on Add or modify an atom tool>>Click on all the bond positions. Click on Add or modify an atom tool

Click on all the bond positions.

Point to the Hydogen atoms. Again, see to it that no two Hydrogen atoms overlap each other.

The obtained structure is cyclohexane(C6H12).

Let's copy and paste the structure
Press CTRL+A to select the structure >>Press CTRL+C to copy>>Press CTRL+V and paste Press CTRL+A to select the structure.

Press CTRL+C to copy and Press CTRL+V and paste.

Point to the structure. Let's convert the second Cyclohexane structure to Cyclohexene.
Click on the Eraser tool >> delete one of the hydrogen bonds of the adjacent carbon atoms. Click on the Eraser tool.

Delete one hydrogen bond from each of the adjacent carbon atoms.

Click on Add a bond or change the multiplicity of the existing one tool Click on Add a bond or change the multiplicity of the existing one tool.

Then click on alternate bonds of the cycle, between the deleted hydrogen bonds.

Point to the structure. The obtained structure is Cyclohexene(C6H10)
Slide Number 5

Assignment

Here is an assignment.
  • Draw structures of Cyclobutane and Cyclopentane.
  • Convert them to Cyclobutadiene and Cyclopentadiene structures.

Your completed assignment should look like this.

Let's clear the Display area.
Press CTRL+A to select the structures >>Press Delete key to delete Press CTRL+A to select the structures.

Press Delete key on the key board to delete.

Next let's convert Cyclohexane to Benzene. Ensure that Current element is Carbon.

Contributors and Content Editors

Madhurig, Nancyvarkey