Metal-organic frameworks, or MOFs, are precisely arranged crystals containing metal corners and organic linkers. Much like polymers, there are many different types of MOFs, each of which has different characteristics in certain applications. The MOF shown here is NU-125, created at Northwestern University. Other MOFs include HKUST-1, UiO-66, Fe-MOF-74, and PCN-250.
As I work with crystals, I've added some extra features for these structures. Crystallographers like viewing these structures with an orthographic camera. Unlike a perspective view, this does not distinguish depth with a focal length. You can also turn unit cell display on and off.