What is the fine-grained topic of the following text: In general, the more sterically demanding phen, when compared with bipy, forces more of the saccharinate anions to be uncoordinated, and for smaller ligands such as H2O to be coordinated to the metal, despite the electrostatic attraction between the positively charged metal and the anion. Only return the topic.
Steric effects on coordination of saccharinate anions and ligands in metal complexes