Selection and Discovery of Polymorphs of Platinum Complexes Facilitated by Polymer-Induced Heteronucleation

Polymer-induced heteronucleation was utilized for the selective crystallization of the color polymorphic platinum complexes Pt(bpy)Cl2 and Pt(phen)Cl2. Crystal structures of two polymorphs of Pt(phen)Cl2 were determined and reveal that, as in the case of Pt(bpy)Cl2, this compound has one form with Pt...Pt interactions (orange crystals) and another lacking these contacts (yellow crystals). Free energy measurements reveal that the polymorphs of...