I have written a series of blog posts about chemistry and LaTeX in the German blog TeXwelt.de. The series covers the basics with chemmacros, reactions and formulae with chemformula and mhchem, skeletal formulae with chemfig, safety data, numbering of compounds, and special kinds of diagrams.
This has been sleeping for quite a while. Some new features here, some polishing there, correcting bugs, completely forgetting about if after I didn’t need it anymore… Well, here it is: ENdiagram. The package for the creation of potential energy curves. Another chemistry niche filled with a package.