It is useful to have a general view of the types of ligands in the ReaLigands library. Nearly 1/3 of the ligands are monodentate. The most common monodentate ligand-to-metal connection occurs with a carbon atom (5069 ligands). The second and third most monodentate ligand-to-metal connections are nitrogen (2625) and phosphine (1145). The top of Figure plots the count of unique monodentate, bidentate, tridentate, and tetradentate ligands extracted from each transition metal center from Sc to Hg. The middle of Figure plots the number of ligand connecting atoms to the transition metal center and color codes the charges. The bottom of Figure plots the denticity and charge for the ligands extracted from each transition metal center.