Lanthanoid single-ion magnets with the LnN10 coordination geometry.

We have reported two unprecedented single-ion magnets (SIMs) with the homoatomic LnN10 coordination geometry, where the central Ln (Ln = DyIII or ErIII) ion is interlocked by two pentadentate ligands (N5) affording a low symmetry polyhedron. Studies of dynamic magnetic behaviours show an effective energy of 79(4) K for [Dy(N5)2]3+ and 59(4) K for [Er(N5)2]3+, respectively. [ABSTRACT FROM AUTHOR]