Lanthanide Phosphonates and Phosphates in Molecular Magnetism

Abstract

Phosphonate and phosphate ligands have historically received less attention when compared to the widely prevalent carboxylate ligand system. Phosphonates possess multiple donating sites, often leading to the formation of larger aggregates with limited solubility. Conversely, the P‐O bond within phosphates is highly susceptible to hydrolysis, resulting in the precipitation of insoluble compounds, particularly when interacting with lanthanide metal ions. However, over the past few decades, various synthetic approaches have emerged for the preparation and characterization of lanthanide complexes involving both phosphonate and phosphate ligands. Consequently, researchers have delved into exploring the magnetic properties of these complexes, such as their potential as single molecule magnets (SMMs) and their ability to exhibit a magnetocaloric effect (MCE). This review will encompass an examination of the crystal structures and magnetic characteristics of lanthanide complexes featuring phosphonate and phosphate ligands.

Development of a 2D Network of Zinc Organophosphate with an 8-Membered Ring Core Having Corrosion Resistance Properties

“…The changeable pore volume and functional groups involved in the creation of these pores and structure similarities made them behave as porous zeolites, for example, as gas sorbents, ion/small molecule-exchanger, and acts as reaction vessels for many catalytic reactions. − Recent studies suggest that some organophosphate materials show extraordinary magnetic properties if transition and rare earth metals get involved . The resulting phosphate materials can be useful as molecular coolants and single molecular magnets . The enormous and astonishing properties of these compounds make them useful to overcome many environmental challenges.…”

“…7 The resulting phosphate materials can be useful as molecular coolants and single molecular magnets. 8 The enormous and astonishing properties of these compounds make them useful to overcome many environmental challenges. The development of such materials has been started since last few decades using multiple steps, and further extension of the network includes appropriate ancillary ligands to connect discrete complexes.…”