Insert Molecular Fragments

Avogadro includes over 400 common molecules and molecular fragments to make building larger structures easy. These molecules are always available even if you don’t have a network connection or cannot import by name.

Under the “Build” menu, hold your cursor over “Insert”, and then select “Fragment…”.

A database of fragments will then pop up (shown below). You can filter the selection if need be. When you click on a particular fragment, a preview will appear:

After you’ve made your fragment selection, click “Insert”.

The fragment will be inserted and the Manipulate tool will be selected so you can move the new fragment around the window.

Tip

Many of these fragments are also available through the Template tool to attach to hydrogen atoms.