Lanthanide (Substituted-)Cyclopentadienyl Bis(phosphinimino)methanediide Complexes: Synthesis and Characterization.

Design and synthesis of high-performance single-molecule magnets (SMMs) have long been a research focus. Inspired by the best dysprosium(III) metallocene SMMs and dysprosium(III) bis(methanediide) SMMs, we assumed dysprosium SMMs, which had electrical neutrality by combining the two types of ligands. As the Dy center is coordinated by one (substituted-)cyclopentadienyl (Cp) ligand and one methanediide ({C(PPhNSiMe)}) ligand on the axial sites, this ideal structure with linear C-Dy-Cp would strengthen the magnetic anisotropy and exhibit excellent SMM properties.