Separation: After (IMAGE) University of Pennsylvania Caption Because neodymium-ligand complexes bind together into dimers, their solubility is higher than the dysprosium-ligand monomers. This allows the former to be easily filtered off. Credit University of Pennsylvania Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.