Drawing molecules

In the previous example, we practiced writing molecular formulas. Now, let’s delve into visualizing them. We’ll create a visual representation of a cluster of atoms interconnected by various types of lines.

How to do it...

This seemingly complex task becomes much simpler with the chemfig package developed by Christian Tellechea. It offers a concise syntax for rendering molecular structures. Let’s create a few:

1. Start with any document class and load the chemfig package:

   \documentclass{article}
   \usepackage{chemfig}

2. Let’s organize molecules in a table. To do this, widen the rows slightly and initiate a tabular environment with a column aligned to the right and another to the left:

   \renewcommand{\arraystretch}{1.5}
   \begin{tabular}{rl}

3. For molecules, use the \chemfig command. Represent atoms as letters and depict a single bond using a dash:

     Hydrogen: & \chemfig{H-H} \\

4. Depict a double bond using an equal...